BAB 04 - HABA

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BAHAGIAN A Section A Bahagian A [60 marks] [60 markah] markah] Answer all questions Jawab semua soalan soalan

[Lihat halaman sebelah

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4531/2 For

TERENGGANU TERENGGAN U 2008, question 1

Examiner ‘s

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SULIT

4531/2 For

KELANTAN KELANTA N 2010, question 1

Examiner ‘s

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Diagram 1.1 shows the set up of apparatus used to investigate the relationship between the pressure and temperature of air at constant volume and mass. Rajah 1.1 menunjukkan susunan radas yang digunakan untuk menyiasat hubungan antara tekanan dengan suhu udara di mana isipadu dan jisimnya tetap.

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Diagram 1.1 shows a metal sphere with initial temperature of 30°C is immersed in boiling water. Rajah 1.1 menunjukkan sebiji sfera logam yang mempunyai suhu awal 3 0°C direndam dalam air mendidih.

Diagram 1.1 / Rajah Rajah 1.1

(a)

(i)

What happen happen to the temper temperatur aturee of the metal sphere? sphere? Apakah yang berlaku kepada suhu sfera logam?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………......


(a)

[1 mark / 1 markah]

Name the the measuring measuring instrumen instrumentt labelled ed X. Namakan alat pengukur berlabel X.

(ii) Give a reason reason for for the answer answer in l (a) (i). (i). Beri satu sehab bagi jawapan dalam 1(a) (i).

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[ l mark / 1 markah] (b) Name the physical quantity measured by instrument instrument labelled labelled X. Namakan kuantiti fizik yang disukat oleh alat pengukur pengukur berlabel X

[1 mark / 1 markah] (b) After sometime, sometime, the metal sphere sphere and the boiling water water have the same temperature. temperature. Selepas beberapa ketika sfera logam dan air mendidih itu mempunyai mempunyai suhu yang sama.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… …………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 markah]

(i)

Tick (√) in the box below for the correct statement about heat flows between the metal sphere and the boiling water.

Tandakan (√) dalam kotak di bawah bagi pernyataan yang benar tentang pengaliran haba di antara sfera

logam dan air mendidih.

(c) (i)

What will will happen to the the reading of the the measuring measuring instrume instrument nt X when the temper temperature ature raised. raised. Apakah yang akan berlaku kepada bacaan alat pengukur X apabila suhu meningkat.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

Rate of heat flows from b oiling water Kadar pengaliran haba dan air mendidih, Rate of heat flows from b oiling water Kadar pengaliran haba dan air mendidih Rate of heat flows from b oiling water Kadar pengaliran haba dan air mendidih

< < = = > >

the rate of heat flows from metal sphere. kadar pengaliran haba dari sfera logam the rate of heat flows from metal sphere. kadar pengaliran haba dan sfera logam. the rate of heat flows from metal sphere. kadar pengaliran haba dan sfera sfera logam

(ii) State the Gas Law involv involved. ed. Nyatakan Hukum Gas yang terlibat.

[1 mark / 1 markah]

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(ii) State the the physics physics concept involv involvee in 1(b) (i). Nyatakan konsep fizik yang terlibat dalam 1(b) (i). (i).

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah markah]

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SULIT

4531/2 For ‘s Examiner ‘s use

JOHOR 2011, 2011, question 1 – HEAT Diagram 1.1 shows the temperature-time graph for heating of a solid napthalene. Rajah 1.1 menunjukkan graf suhu melawan masa bagi pemanasan pepejal naftalena.

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SULIT

4531/2 For

KEDAH 2011, 2011, question 1

Examiner ‘s use

Diagram 1.1 shows a metal sphere being immersed in water. The initial temperatures of the metal sphere and water are 100 °C and 25°C respectively. Rajah 1.1 menunjukkan sebiji sfera logam ditenggelamkan ke dalam air. Suhu awal sfera logam dan air m asing-masing ialah 100 °C dan 25°C

Diagram 1.1 / Rajah Rajah 1.1 Diagram 1.1 / Rajah Rajah 1.1

(a)

Complete the sentence below by ticking (√) the correct box. Lengkapkan ayat di bawah dengan menanda (√) dalam kotak yang betul. betul.

(a)

At section BC of the graph, heat is Di bahagian BC pada pada graf, haba

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absorbed diserap released dibebaskan

[ l mark / 1 markah] (b) Why does the the physical physical quantity quantity in 1(a) change? change? Mengapakah kuantiti fizik di 1(a) 1(a) berubah? [1 mark / 1 markah]

( b) b)

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B as as ed ed on on Diagram 1.1 state the melting point of the napthalene. Berdasarkan Rajah 1.1 , nyatakan takat lebur bagi naftalena.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

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(c)

After a few hours, is is the physical physical quantity in in 1(a) still changing? Selepas dibiarkan beberapa jam, adakah kuantiti fizik di 1(a) masih sedang berubah? berubah?

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(c) Complete the following following sentence by underlining underlining the correct phrase in the bracket. Lengkapkan ayat berikut dengan menggariskan fasa yang betul di di dalam kuningan.

At section AS of the graph. the heat involved is Di bahagian AB , haba yang terlibat ialah

Name the the physical physical quantity quantity that is is changing changing in Diagram 1.1. Namakan kuantiti fizik yang sedang berubah dalam Rajah 1.1.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

the specific heat capacity muatan haba tentu the specific latent heat haba pendam tentu thermal equilibrium keseimbangen terma

(d) Name the the situation situation in in 1(c). Namakan keadaan di 1(c).

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(d) Why the temperatu temperature re remains remains constant constant at section section BC of the graph? Mengapa suhu kekal sama di bahagian graf BC BC ?

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4531/2 For Examiner ‘s use

N9 2011, question 1 - INTRODUCTION Diagram 1.1 shows a mercury thermometer. Rajah 1.1 menunjukkan satu termometer merkuri. menunjukkan

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SULIT Diagram 1.1 shows the scale of a thermometer. thermometer. Rajah 1.1 menunjukkan skala thermometer menunjukkan

Diagram 1.1 / Rajah 1.1

(a) Complete the the sentence below by ticking (√) the correct box. Lengkapkan ayat di bawah dengan menandakan (√) dalam kotak yang betul. Thermometer is used to measure Termometer Termometer digunakan un tuk mengukur the change in temperature of an object perubahan suhu sesuatu objek the heat energy of an object Tenaga haba sesuatu objek. [ 1 mark / 1 / 1 markah] markah] (b) Complete the the following sentence by underlining the the correct phrase in the bracket. Lengkapkan ayat berikut dengan menggariskan menggariskan frasa yang betul di dalam kurungan.


(a) Name the physical quantity quantity measured measured by the the thermometer. thermometer. Namakan kuantiti fizik yang diukur oleh oleh termometer


The thermometer with smaller bulb in Diagram 1.2 is (more sensitive | less sensitive ) than thermometer with larger bulb. lebih peka | kurang peka Termometer Termometer dengan be bull yang kecil dalam Rajah 1.2 ( ( lebih ) berbanding termometer dengan bebuli besar. [ 1 mark / 1 / 1 markah] markah] (c) State the physical change in in the mercury mercury when the temperature increases. increases. Nyatakan perubahan sifat fizikal pada merkuri merkuri apabila suhu bertambah. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah] (d) Give one reason, why mercury is used in the thermometer? thermometer? Berikan satu sebab mengapa merkuri digunakan dalam termometer termometer itu? …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah ]


PERAK 2011, question 1

…………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah] (b) What is the value value of the smallest division on the scale? scale? Apakah nilai bahagian skala yang paling kecil? …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah] (c) What is the the reading of the instrument in degree Celcius? Berapakah bacaan alat pengukur itu dalam darjah Celcius? Celcius? …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah] (d) Name a suitable suitable liquid to be used in the thermometer? thermometer? Namakan cecair yang sesuai digunakan dalam termometer? termometer? …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah]

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Examiner ‘s

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4531/2 For

MELAKA2012, question 1

Examiner ‘s

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Diagram 1.1 shows a metal block, X is heated in boiling water. The metal block is then transferred into water in a polystyrene cup until thermal equilibrium achieved. The temperature-time graph of the water is plotted as shown in Diagram 1.2. Rajah 1.1 menunjukkan salu blok logam, X dipanaskan dalam air mendidih. Blok logam itu kemudiannya dipindahkan ke dalam cawan polisrerin yang berisi air sehingga sehingga mencapai keseimbangan terma. Graf suhu- masa diplotkan seperti dalam Rajah 1.2.

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Diagram 1 shows a heated metal bob is immediately immersed in water. Diagram 2 shows a heating curve graph for water molecule 34°C. Rajah 1 menurjukkan satu ladung logam yang telah danaskan dan direndam ke dalam air dengan serta merta. Rajah 2 menurjukkan lengkungpemanasan bagi molekul air.

Diagram 1 / Rajah Rajah 1

(a) Diagram 1.1 / Rajah Rajah 1.1

(a)


Diagram 2 / Rajah Rajah 2

Name the physical quantity quantity measured by the thermometer. thermometer. Namakan kuantiti fizikal yang diukur oleh thermometer thermometer itu.

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What is the the meaning meaning of thermal thermal equilibrium? equilibrium? Apakah maksud keseimbangan terma?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) Based Based on graph in Diagram 1.2, state the temperature when thermal equilibrium occurs. Berdasarkan graf dalam Rajah 1.2 , nyatakan suhu bila keseimbangan terma berlaku.

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(b) Choose Choose the correct correct statement statement by ticking ticking (√) in the box.

Pilih pernyataan yang betul dengan menanda tik tik (√) dalam kotak yang sepadan. The water molecule released more heat than the metal bob Molekul air membebaskan haba yang lebih banyak. The metal bob released more heat than the water molecule Bandul logam membebaskan lebih baiiyak haba daiipada molekul air

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Complete the sentences below by ticking (√) the correct box. Lengkapkan ayat-ayat di bawah dengan menandakan (√) dalam kotak yang betul. (i)

(c) Base Base on on the the graph graph of of Diagram 2, how long does it take for the water molecule to reach the maximum temperature Berdasarkan grcfpada grcfpada rajah 2, Berapakah masa yang diambil oleh molekul air untuk menccpai suhu maksimum?

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During During the process process to achieve achieve the thermal thermal equilibr equilibrium ium in Diagram 1.1, Sewaktu proses untuk mencapai keseimbangan terma seperti dalam Rajah l.1

[ l mark / 1 markah] (d) State a reason for for the temperature ofthe water molecule remains constant constant when it reaches reaches at 34° C. Nyatakan satu sebab men gcpa suhu air meijadi tetcp sekpas ia menccpai suhu 34° C.

Heat transferred from metal block to water. Haba dipindahkan dan blok logam kepada air . Heat transferred from water to metal block. Haba dipindahkan dan air kepada blok logam.

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(ii) Heat energyinvolved energyinvolved in the the process process is used used to Tenaga haba yang terlibat dalam proses inil digunakan untuk

[ l mark / 1 markah]

overcome forces of attraction between water molecule Mengatasi daya tarikan di antara molekul air. increase kinetic energy of the water molecule Meningkatkan tenaga kinetik molekul air [2 mark / 2 markah]

SULIT

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4531/2 For

PERAK 2008, question question 3

Examiner ‘s

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4531/2 For

MELAKA 2009, question 3

Examiner ‘s

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Diagram 3.1 shows a boy carrying a block of ice of 2.5 kg that he just bought from a shop. He could feel that the ice is at a constant cold temperature. The surface of the ice is wet and water is dripping down from the block of ice. Rajah 3.1 menunjukkan seorang budak lelaki membawa 2.5 kg bungkah ais yang dibeli daripada kedai. Dia mendapati suhu ais adalah sejuk yang sekata. Permukaan ais basah dan air menitis daripada bungkah ais.

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A block of copper with mass of 200 g is heated to 100 °C in boiling water. The hot copper is then quickly transferred to a beaker containing 700 g of water at 30 °C as shown in Diagram 3.1. After 2 minutes the thermal equilibrium is achieved and the final temperature is 80 °C. Sebongkah kuprum berjisim 200 g dipanaskan hingga 100 °C di dalam air mendidih. Kuprum yang panas itu kemudian dipindahkan dengan cepat ke dalam bikar yang mengandungi 70 0 g air bersuhu 30 °C seperti diturjukkan dalam Rajah 3.1. Selepas 2 minit keseimbangan terma tercapai dan suhu akhir adalah 80 °C.

Rajah 3.1 Diagram 3.1 / Rajah (a)

Name the heat energy which is absorbcd absorbcd by the block of ice. Namakan tenaga yang diserap oleh ais Diagram 3.1 / Rajah Rajah 3.1

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) State one reasonwhy the temperature of the block of ice and the water dripping down are the same even though heat is supplied, Nyatakan satu sebab mengapa suhu bungkah ais dan air yang menitis adalah sama walaupun haba dibekalkan.

(a)

(i)

Determine Determine the differe difference nce in temperat temperature ure between between the boiling boiling water water and the water water in the beaker beaker as shown in Diagram 3.1 Tentukan perbezaan suhu antara air mendidih dengan air di dalam bikar pada Rajah 3.1

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

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(ii) What is the net flow of heat during during the thermal thermal equilibrium? Apakah pengaliran haba bersih ketika keseimbangan terma?

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(c) Calculate the heat heat energy, which is absorbed from from the block of ice. Hitung tenaga haba, yang diserap dan bungkah ais.

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[The specific latent heat of of fusion of water, 1 = 3.36 x 10 J kg-1] -1 [Haba pendam tentu pelakuran air = 3.36 x 10 J kg ]

(b) On Diagram 3.2 below using directed lines, show the direction of heat transfer between the water and the block copper. Pada rajah 3.2 di bawah dengan menggunakan garisan berarah, tunjukkan arah pengaliran haba antara air dan blok kuprum

[2 mark / 2 markah] (d) Sketch the graph of temperature against time to show the the change of phase. Lakarkan graf suhu melawan masa untuk menunjukkan perubahan fasa.


[1 mark / 1 markah markah] [2 mark / 2 markah]

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SULIT (c)

4531/2

The specifi specificc heat capacity capacity of of copper copper is 400 J kg-1 ° C-1. Calculate heat energy released by the copper -1 -1 Muatan haba tentu kuprum ialah 400 Jkg ° C . Hitung tenaga haba yang dibebaskan oleh kuprum

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SULIT

4531/2 For

SBP 2009, question 3

Examiner ‘s use

Diagram 3.1 shows a metal P at 100°C being placed in a beaker of water at 28 °C. After a few minutes thermal equilibrium state is achieved. The mass of m etal P and the water are 0.4 kg and 0.2 kg respectively. Rajah 3.1 menujukkan logam P pada suhu 100°C di letakkan di dalam bikar mengandungi air pada suhu 28°C. Selepas beberapa minit keadaan keseimbangan terma dicapai. Jisim logam P dan air masing-masing adalah 0.4 kg dan 0.2 kg. Diagram 3.2 shows a temperature against time graph of the water in the beaker. Rajah 3.2 menujukkan graf suhu berbanding masa bagi air dalam bikar itu.

[2 mark / 2 markah] -1

-1

(d) The specifi specificc heat capacity capacity of water water is 4200 J kg °C . What is the raise raise of temperature temperature of 1 kg of water when supply with12 600 joule of heat energy. energy. -1 -1 Muatan haba tentu air ialah 4200 Jkg ° C Berapakah kenaikan suhu 1 kg air apabila dibekalkan dengan tenaga haba sebahyak 12600 Joule.


(a)

(i)

[1 mark / 1 markah]

What What is the the meanin meaning g of therm thermal al equil equilibr ibrium ium?? Apakah yang di maksudkan dengan keseimbangan terma?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) (ii) Based Based on the the graph graph in Diagram 3.2, what is the temperature when the thermal equilibrium is achieved? Berdasarkan graf dalam Rajah 3.2 berapakah suhu apabila keadaan keseimbangan terma dicapai?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (iii) What is the purpose of wrapping the beaker with with cotton layer? Apakah tujuan membalut bikar dengan lapisan kapas?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (b) (i)

Calculate Calculate the specific specific heat capacity capacity of metal metal P. Hitungkan muatan haba tentu logam P. [Specific heat capacity of water is 4200 J kg -1 °C-1 / Muatan Muatan haba tentu air adalah 4200 J kg-1 °C-1]

[2 mark / 2 markah] (ii) State the the assumption assumption you made made in (b)(i) (b)(i) Nyatakan anggapan yang dibuat dalam (b) (i).

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

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Examiner ‘s use

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SULIT (c)

4531/2

The specif specific ic heat heat capacity capacity ofcopper is 400 J kg-1 ° C-1. Calculate heat energy released by the copper -1 -1 Muatan haba tentu kuprum ialah 400 Jkg ° C . Hitung tenaga haba yang dibebaskan oleh kuprum

A block of copper with mass of 200 g is heated to 100 °C in boiling water. The hot copper is then quickly transferred to a beaker containing 700 g of water at 30 °C as shown in Diagram 3.1. After 2 minutes the thermal equilibrium is achieved and the final temperature is 80 °C. Sebongkah kuprum berjisim 200 g dipanaskan hingga 100 °C di dalam air mendidih. Kuprum yang panas itu kemudian dipindahkan dengan cepat ke dalam bikar yang mengandungi 70 0 g air bersuhu 30 °C seperti diturjukkan dalam Rajah 3.1. Selepas 2 minit keseimbangan terma tercapai dan suhu akhir adalah 80 °C.

[2 mark / 2 markah] -1

-1

(d) The specifi specificc heat capacity capacity of water water is 4200 J kg °C . What is the raise raise of temperature temperature of 1 kg of water when supply with12 600 joule of heat energy. energy. -1 -1 Muatan haba tentu air ialah 4200 Jkg ° C Berapakah kenaikan suhu 1 kg air apabila dibekalkan dengan tenaga haba sebahyak 12600 Joule.


(a)

(i)

Determine Determine the differe difference nce in temperat temperature ure between between the boiling boiling water water and the water water in the beaker beaker as shown in Diagram 3.1 Tentukan perbezaan suhuantara air mendidih dengan air di dalam bikar pada Rajah 3.1

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) What is the net flow of heat during during the thermal thermal equilibrium? Apakah pengaliran haba bersih ketika keseimbangan terma?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (b) On Diagram 3.2 below using directed lines, show the direction of heat transfer between the water and the block copper. Pada rajah 3.2 di bawah dengan menggunakan garisan berarah, tunjukkan arah pengaliran haba antara air dan blok kuprum


[1 mark / 1 markah markah]

[1 mark / 1 markah]

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Examiner ‘s

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Diagram 3.1 shows a 600W electric heater being used to heat a beaker of water on a compression balance. Rajah 3.1 menunjukkan suatu pemanas elektrik 600 W digunakan untuk memanaskan satu bikar air di atas neraca mampatan.

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Diagram 3.1 shows a set up apparatus used to investigate the relationship between pressure and temperature of air at fix volume and mass. Rajah 3.1 menunjukkan pemasangan radas yang digunakan untuk menyiasat hubungan antara tekanan dan suhu udarapada isipadu danjisim tetap.

Rajah 3.1 Diagram 3.1 / Rajah (a)

State the energy change involved when using using the heater to heat the the water. Nyatakan perubahan tenaga yang terlibat ketikapemanas ketikapemanas itu digunakan untuk memanaskan air. air.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) The mass of water water is 0.5 kg and srcific heat capacity capacity of water is 4200 J kg-1ºC-1. The initial temperature of water is 28 ºC. Calculate the energy absorbed by the water to reach its boiling point. -1 -1 Jisim air ialah 0.5 kg dan muatan haba tentu bagi air ialah 4200 J kg ºC . Suhu awal awal air ialah ialah 28 °C. Hitung Hitung tenaga yang diserap oleh air itu untuk mencapai takar didih.


(a)

What is the the meaning meaning of pressure? pressure? Apakah yang dimaksudkan dengan tekanan? ......... ………………………………………………………………………………………………………………...............

………………………………………………………………………………………………………………............... ......... [1 mark / 1 markah markah] (b) By using the kinetic theory theory of molecule, explain how gas gas molecule exerted pressure on the the walls of close container. Dengan menggunakan teori kinetik m olekul, terangkan bagaimana tekanan dikenakan oleh gas pada dinding sebuah bekas yang tertutup? ......... ………………………………………………………………………………………………………………...............

[2 marks marks / 2 markah] (c)

When the water is boiling, the reading reading of the compression compression balance decreases by 0.04 kg in 160s. Calculate the specific latent heat of vaporization of the water. Ketika air mendidih, bacaan neraca mampatan berkurang sebanyak 0.04 kg dalam masa 160s. Hitung haba pendam tentu pengewapan bagi air itu.

[2 marks marks / 2 markah]

......... ………………………………………………………………………………………………………………............... ......... ………………………………………………………………………………………………………………...............

………………………………………………………………………………………………………………............... ......... ......... ………………………………………………………………………………………………………………............... [3 mark / 3 markah markah] (c) A motorist motorist blows up her her car tyres to a pressure of 2.7 atm in a cold morning morning when the temperature temperature is -5°C. What will be the pressure in the tyres on a hot day if the the temperature is 27°C? Seorang penunggang motosikal mengisi mengisi angin tayar ke tekanan tekanan 2.7 atm pada waktu pagi bila suhunya -5°C. Berapakah tekanan tayar itu pada hari panas jika suhunya 27° C?

(d) Explain why at the boiling point, the the temperature of water water remain unchanged. Terangkanmengapa pada takat didih, suhu air tidak berubah.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 2 m ar ar ks ks / 2 markah markah]


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MRSM 2012, question 3

Examiner ‘s

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N9 2013, question 3

Examiner ‘s

use

Diagram 3.1 shows a mercury thermometer which has not been calibrated. Rajah 3.1 menunjukkan termometer merkuri yang belum ditentukur.

use

Rajah 3.1 menunjukkan radas untuk menentukan haba pendam tentu pengewapan air. Pemanas elektrik yang berkuasa 100W digunakan untuk mendidih air di dalam kelalang vakum. Stim yang terhasil terkondensasi dan air dikumpulkan dalam bikar di bawah tiub kaca. Diagram 3.1 shows an apparatus to determine the specificc latent heat vaporisation. Electric heater with power 100W is used to boil the water in a vacuum flask. The steam produced condensed and the water is co llected in a beaker under the glass tube.


(a)

(i)

Name the the physical physical quantity quantity that that changes changes as as temperat temperature ure increas increases. es. Namakan kuantiti fizik yang berubah apabila suhu meningkat. Diagram 3.1 / Rajah Rajah 3.1

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

(a)

Apakah Apakah maksud haba haba pendam tentu tentu pengewapa pengewapan? n? What is the meaning specific latent heat vaporization?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ………..

(ii) Why is mercury used in the liquid-in-glass thermometer? Mengapa merkuri digunakan di dalam termometer cecair dalam kaca?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

(b) Nyatakan mengapa kelalang kelalang vakum digunakan dalam dalam eksperimen eksperimen ini. State why a vacuum flask is used in this experiment.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ………..

(b) The length between between the ice point and the the steam point is is marked into 100 equal divisions. Panjang di antara takat ais dan takat slim ditanda kepada 100 bahagian yang seragam.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

Calculate the temperature at P in °C. Kirakan suhu pada P dalam °C.

(c) (i)

Hitungkan Hitungkan tenagayang tenagayang dibekalkan dibekalkan oleh pemana pemanass jika jisim jisim airterkumpul airterkumpul dalam dalam masa 500 saat saat ialah ialah 200g. Calculate energy supplied by heater if mass of water collected in 500 seconds is 200 g.

[2 mark / 2 markah markah] [2 mark / 2 markah markah] (c) Suggest one method to improve the sensitivity sensitivity of the thermometer. thermometer. Cadangkan satu kaedah untuk meningkatkan kepekaan termometer.

(ii) Berdasarkanjawapan anda di 3(c)(i) hitungkan hitungkan haba pendam tentu tentu pengewapan air. Based on your answer in 3(c)(i) calculate the pecfic latent latent heat vaporisation.

......... ………………………………………………………………………………………………………………............... ......... ………………………………………………………………………………………………………………............... [1 mark / 1 markah] (d) Name one liquid which is suitable for a liquid-in-glass liquid-in-glass thermometer thermometer to be used in the Arties. Arties. Namakan satu cecair yang sesuai bagi suatu termometer cecair-dalam-kaca cecair-dalam-kaca yang akan digunakan di kawasan Artik ......... ………………………………………………………………………………………………………………...............

………………………………………………………………………………………………………………............... ......... [1 mark / 1 markah]

[2 mark / 2 markah markah] (d) Nyatakan Nyatakan mengapa mengapa ikan masak masak lebih cepat dimasakjika dimasakjika dikukus. dikukus. State why a fish is cooked faster if it is steamed

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

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PERAK 2012, question 3

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(v) State one one assumption assumption made in in the physics physics law in (a) (iv) (iv) above. above. Nyatakan satu andaian yang dibuat dalam hukum (a) (iv) di alas.

Examiner ‘s use

Diagram 3.1 shows an air bubble released by a diver at position X which then rises up to position Y. Rajah 3.1 menunjukkan satu gelembung udara yang dilepaskan oleh seorang penyelam pada kedudukan X dan bergerak ke arah Y

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (b)

Using your answer in (a)(iii) above, above, sketch the graph of pressure against volume of the gas. Menggunakan jawapan anda dalam (a)(iii), lakarkan graf tekanan tekanan melawan isipadu untuk gas tersbut.

[1 mark / 1 markah]


(a)

Based Based on the observat observation ion of the the air bubble bubble in Diagram 3.1. Berdasarkan pemerhatian gelembung gelembung udara pada Rajah 3.1 (i)

Compare Compare the volume volume of of the air air bubble bubble at X and Y Bandingkan isipadu gelembung udara pada kedudukan X dan Y .

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

(ii) Compare Compare the pressure pressure of the the air bubble bubble at X and Y Bandingkan tektinan gelembung udara pada kedudukan X dan Y

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (iii) Relate the changes of the pressure and the volume of the air air bubble at X and Y Hubungkaitkan perubahan tekanan dan isipadu gelembung udara pada kedudukan X dan Y .

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (iv) Name the physics physics law which which is involved involved in the above observation. Namakan hukum fizik yang terlibat dalam pemerhatian di alas.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

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PERAK 2009, question 4 Human body temperature is always maintained at 37 ºC. One will start to sweat after a game of squash. Sweating is a way to cool down our body when swunt evaporates. Suhu badan manusia kekal pada 37 °C. Perpeluhan berlaku selepas permainan skuasy. Perpeluhan adalah kaedah untuk menyejukkan badan apabila peluh tersejat.

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PAHANG 2011, question question 4

Examiner ‘s use

A solid substance of mass 0.5 kg is heated using an electric heater of power 100W. Diagram 4.1 shows the heating curve of the substance. Suatu bahan pepejal berjisim 0.5 kg dipanaskan menggunakan pemanas elektrik berkuasa 100 W. Rajah 4.1 menunjukkan keluk pemanasan pepejal itu.


(a) State State the physical change change of state state during evaporatio evaporation. n. Nyatakan perubahan keadaan fizikal semasa pernyejatan pernyejatan

Rajah 4.1 Diagram 4.1 / Rajah

…………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ l mark / 1 / 1 markah] markah]

Based on Diagram 4.1; Berdasarkafl Rajah 4.1; (a)

(b) Using kinetic theory of matter, matter, explain how evaporation takes takes away heat from our body through sweat. Berdasarkan teorikinetik teorikinetik jirim, huraikan bagaimana penyejatan penyejatan menyerap haba dari badan kita semasa perpeluhan …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. ……..

State State the melting melting point point of the substa substance. nce. Nyatakan takat lebur bahan itu

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

…………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ 2 marks / 2 / 2 markah] markah ]

(b) (i)

Calculate Calculate the the specific specific latent latent heat of of fusion fusion of the substance. substance. Hitungkan haba pendam tentu pelakuran bahari itu.

(e) State two environmental environmental fitetors that that effect the the rate of evaporation of sweat. Nyatakan dua faktor yang mempengaruhi kadar penyejatan penyejatan peluh …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… ……………………………………… ………………………………………………………………………………………… ………………………………………………….. …….. [ 2 marks / 2 / 2 markah] markah ] (d) After the game, the player loses 0.08 kg of mass through sweat evaporation. Calculate Calculate the quantity quantity of heat loss in his body through evaporation [The latent heat of evaporation is 2.4 x 10 3 J kg-1] Selepas satu permainan skuasy, pemain kehilangan jisim sebanyak 0.08 kg melalui perpeluhan. Hitungkan kuantiti haba yang hilang dari badan melalui perpeluhan [Haba pendam pengewapan adalah 2.4 x 10 3 J kg -1 ]

[3 mark / 3 markah] (ii) State one assumpti assumption on which you have made made in (b)(i) Nyatakan satu anggapan yang perlu anda buat dalam (b) (i).

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (c) By using the molecular molecular kinetic theory, theory, explain why why the temperature is is constant between Q and R. Dengan menggunakan teori kinetik molekul, terangkan mengapa suhu adalah adalah malar di antara Q dan R.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [2 mark / 2 markah markah]

…………………………………………………………………………………… …………………………………… …………………………………………………………………………………………… ………………………………………………….. …….. [ 2 marks / 2 markah]

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PERAK 2011, 2011, question 4

Examiner ‘s use

A substance Y of mass 0.5 kg is heated using a heater with a power of 100 W. The temperature-time graph is shown in Diagram 4.1 Suatu bahan Y berjisim 0.5 kg dipanaskan dengan menggunakan pemanas 100 W. Graf suhu-masa adalah seperti yang ditunjukkan dalam Rajah 4.1


(a)

What is is the temperat temperature ure of subst substance ance Y after 300 s? Berapakah suhu bahan Y selepas 300 s?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) Based Based on the the graph graph in Diagram 4.1, calculate Berdasarkan graf pada Rajah 4.1 , hitungkan (i)

The heat heat energy energy absorb absorbed ed by substance substance Y at region KL Tenaga haba yang diserap oleh bahan Y pada pada kedudukan KL

[2 mark / 2 markah] (ii) The specific specific heat heat capacity capacity of substance substance Y. Muatan haba tentu bahan Y

[2 mark / 2 markah] (iii) The specific specific latent heat of substance Y. Haba pendam tentu bagi bahan Y

[2 mark / 2 markah]

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Examiner ‘s use

Diagram 4.1 is a set up apparatus used to investigate the relationship between pressure and temperature of air at constant volume and mass. Rajah 4.1 menunjukkan susunan radas yang digunakan untuk menyiasat hubungan antara tekanan dengan suhu udara pada isipadu dan jisim tetap.

(d) A car tyre tyre has a pressure of 130 kPa at at a temperature of 27°C. 27°C. Calculate the temperature temperature of the air in the the tyre if the pressure increases increases to 136 kPa? Tayar kereta mempunyai tekanan 130 kPa pada suhu 27°C. Hitung suhu udara dalam tayarjika tekanan bertambah kepada 136 kPa.

[ 3 mark mark / 3 markah markah]


( a) a)

B as as ed ed on on Diagram 4.1, choose the correct measuring instrument labeled X. Tick Tick (√) the correct answer in the box provided. Berdasarkan Rajah 4.1 , pilih alatpengukur berlabel X yang yang betul. Tanda (√) jawapan yang betul pada petak yang disediakan. Barometer Barometer Bourdon gauge Tolok Bourdon Manometer Manometer [ l mark / 1 markah]

(b) State State the physical physical quantit quantity y measured measured by X. Nyatakan kuantiti fizik yang diukur oleh oleh X

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (c) (i)

What What will will happ happen en to to the the readi reading ng of X when the temperature increases? Apakah yang akan berlaku kpada bacaan X apabila suhu bertambah?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Give one reason reason for the the answer answer in 4(c)(i). 4(c)(i). Beri satu sebab bagi jawapan dalam 4(c)(i).

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

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Examiner ‘s use

Diagram 4.1 shows a metal block of mass 1 kg at initial temperature 30 °C is heated by 12 V, 48 W immersion heater for 15 minutes. Rajah 4.1 menunjukkan sebuah blok logam berjisim 1 kg pada suhu awal 30 °C dipanaskan oleh pemanas rendam 12 V, 48 W selama 15 minit.

(i)

Using the physics physics concept, concept, explain explain how the phenomenon phenomenon occurs. occurs. Menggunakan konsep fizik, terangkan bagaimana fenomena ini berlaku.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [3 mark / 3 markah markah] (ii) Name the the phenomenon phenomenon that that occurs occurs Namakan fenomena yang berlaku

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]


(a)

What is is meant by specific specific heat capaci capacity? ty? Apakah yang dimaksudkan dengan muatan haba tentu?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) If the final temperature is is 90 °C, calculate the specific heat capacity capacity of metal block. Jika suhu akhir ialah 90 °C, hitung muatan haba tentu bagi blok logam itu.

[ 2 mark mark / 2 markah markah] (c)

Diagram 4.2 shows a phenomenon which occur in our daily life. Rajah 4.2 menunjukkan satu fenomena yang berlaku dalam kehidupan seharian kita.


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PAHANG 2009, question 5

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(d) Calculate the heat heat energy in (c) that is specific for one kg of ice. Hitung tenaga haba di (c) yang tertentu untuk satu kg ais.

Diagram 5.1(a) is an experimental set-up and diagram 5.1(b) is a control set-up. When the power supply is switch on, water will drips out of the filter funnels. As soon as water is dripping out at a constant rate, beaker A and beaker B are placed under the filter funnels and a stop watch is started simultaneously. Rajah 5.1(a) ialah radas ekperimen dan rajah 5.1(b) ialah radas kawalan. Apabila bekalan kuasa dihidupkan air akan menitis dan corong turas. Sejurus titisan air menitis pada kadar seragam, bikar A dan bikar B diletakkan di bawah corong turas danjam randik dimulakan serentak..

[2 marks marks / 2 markah] (e)

Value Value calculated in (d) is higher than the actual value. value. Explain why? Nilai yang di hitung di (d) lebih tinggi dan nilai sebenar. sebenar. Terangkan mengapa?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… …………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 2 m ar ar ks ks / 2 markah markah]

(f) Suggest Suggest one way to get a more more accurate accurate value. value. Cadangkan satu kaedah untuk mendpat nilai yang lebih jitu.


(a)

What is is the purpose purpose of having having a control control set-up? set-up? Apakah tujuan radas kawalan?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ………..

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] After 5 minutes, the mass of water collected in beaker A and B are measured. Table 5.1 below shows the data collected from the experiment. Selepas 5 minit, jisim air yang dikunipulkan dalam bikar A dan B disukat. Jadual 5.1 di bawah menurjukkan data yang diperolehi dan eksperimen tersebut tersebut . Mass of water collected in b eaker A / g Jisim air yang dikumpulkan dalam bikar A / g Mass of water collected in beaker B / g Jisim air yang dikumpulkan dalam bikar B / g Amount of heat supplied Q / kJ Jumlah haba yang dibekalkan Q / kJ

180 12 56.8

Table 5.1 / Jadual 5.1

(b)

What is the the mass of ice melted by the energy supplied by the power supply? Berapakah jisim ais yang dileburkan oleh tenaga dibekal dibekal oleh bekalan kuasa?

[ l mark / 1 markah] (c) Name the heat energy energy required to melt the ice in this this experiment. Namakan tenaga haba yang diperlukan untuk melebur ais dalam ekperimen mi.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

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SELANGOR 2009, question 5

Examiner ‘s

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use

Diagram 5.1 and Diagram 5.2 show two types of metal b locts, P and Q being heated by 50 W immersion heater or 5 minutes. Table 5.1 shows information related to metal blocks, P and Q. Rajah 5.1 dan Rajah 5.2 menunjukkan dua blok P P dan Q dipanaskan oleh pemanas rendam rendam 50 W yang serupa selama 5 ininit. Jadual 5.1 menunjukkan maklumat berkaitan blok logam P dan Q. .

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Based on your your answers in 5(b), compares the rise in temperature temperature for metal block P and metal block Q. Berdasarkan jawapan anda dalam 5(b), bandingkan kenaikan suhu bagi blok blok logam P dan blok logam Q.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (d) Based Based on the the informat information ion in in Table 5.1, Berdasarkan maklumat dalam Jadual 5.1, (i)

Compare Compare the specific specific heat heat capacity capacity of of metal metal block block P and metal block Q. Bandingkan muatan haba tentu blok logam P dan blok logam Q.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Relate the rise in in temperature to the the specific heat capacity of the metal block. Hubungkaitkan antara kenaikan suhu dan muatan haba tentu blok logam.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... Diagram 5.1 / Rajah Rajah 5.1 Metal block Blok logam P Q

(a)

Mass Jisim (kg) 1.0 1.0


Specific heat capacity Muatan haba tentu (J kg-1 ºC-1) 175 173

[1 mark / 1 markah] (e)

Heat energy supplied Tenaga haba dibekalkan (J) 658 1740

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ………..

Jadual 5.1 Table 5.1 / Jadual What is is meant by specific specific heat capaci capacity? ty? Apakah yang dimaksudkan dengan muatan haba tentu?

[ l mark / 1 markah]

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) Calculat Calculatee the rise in in temperature temperature for for Hitung kenaikan suhu bagi (i) (i)

In this experiment, experiment, the temperature is recorded when the the reading on the thermometer thermometer has achieved a constant value. State the reason why. Dalam eksperimen ini, bacaan suhu dicatatkan apabila bacaan pada termometer mencapai suatu nilai tetap. tetap. Nyatakan sebab.

Meta Metall bloc block k P. Blok logam P.

[1mark / 1 markah] (ii) (ii) Metal Metal block block Q. blok logam Q

[2marks/ [2marks/ 2 markah markah]

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PERLIS 2011, question question 5

Examiner ‘s use

Diagram5.1 shows hot tea in a glass while Diagram 5.2 show what happened to the tea after some ice is put in it. Rajah 5.1 menunjukkan ninuman teh panas di dalam satu gelas sementara Rajah 5.2 pula m enunjukkan apa yang berlaku apabila ais dimasukkan ke dalam minuman itu .

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When Ahmad is driving driving in one morning, he observed that water water vapour is formed in in his car and water water droplets formed on the inside part of his car windscreen. Give one action he should do to get rid of the water vapour. Explain your action. Semasa memandu pada waktu pagi. Ahmad mendapati terdapat pembentukan wap air di dalam kereta dan titisan air pada permukaan cermin di bahagian dalan keretanya. Nyatakan satu langkah yangAhmad boleh lakukan untuk menghilangkan wap air yang terbentuk pada cermin keretanya. Terangkan sebabnya.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 3 marks / 3 markah]


(a)


What is therma thermall equilib equilibrium? rium? Apakah maksud keseimbangan terma?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] ( b) b)

B as as ed ed on on diagram 5.1 and Diagram 5.2 Berdasarkan Rajah 5. 1 dan Rajah 5.2 (i)

Compare Compare the temper temperature ature of the glass in in Diagram 5.1 and Diagram 5.2. Bandingkan suhu gelas dalam Rajah 5.1 dan Rajah 5.2.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Compare Compare the temperat temperature ure of the glass glass in Diagram 5.2 with its surrounding Bandingkan suhu gelas dalam Rajah 5.2 dengan suhu persekitarannya

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

(c)

In Diagram 5.2, water droplets form on the surface of glass. Dalam Rajah 5.2 titisan air terbentuk di atas permukaan gelas. (i)

Name the process process that that cause water water droplets droplets to be formed. formed. Namakan proses yang menyebabkan titisan air terbentuk.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Give the reason reason for your your answer answer in (c)(i) Berikan alasan bagi jawapan anda di (c)(i)

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

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(d) Name a physics physics law involved involved in the above observation observation Namakan satu hukum fizik yang terlibat dalam pemerhatian di atas. atas.

Diagram 5.1 and Diagram 5.2 shows an experiment to study the relationship between pressure and volume of air trapped in an air-tight container. Rajah 5.1 dan Rajah 5.2 menunjukkan satu eksperimen untuk mengkaji hubungan antara tekanan dan isipadu udara yang terperangkap di dalam satu bekas kedap udara.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (e)

Using The Kinetic Molecular Molecular Theory explain your answer answer in (c) above. Menggunakan teori kinetic molekul, terangkan terangkan jawapan anda di (c) di atas .

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 2 marks / 2 markah]

(a)

Air-tight cantainer Bekas kedap udara

Air-tight cantainer Bekas kedap udara



State State the functio function n of Bourdon Bourdon Gauge. Gauge. Nyatakan fungsi Tolok Tolok Bourdon.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) (b) Base Based d on Diagram 5.1 and Diagram 5.2, Berdasarkan Rajah 5.1 dan Rajah 5.2 , (i)

Compare Compare the volume volume of the the gas in the the air-tight container container Bandingkan isipadu gas dalam bekas kedap udara

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) The reading reading of of Bourdon Bourdon gauge gauge Bacaan Tolok Bourdon

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (iii) Temperature Temperature of the gas in the air – tight container Suhu gas dalam bekas kedap udara itu

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

(c)

Using your answer in b(i) and b(ii) state a relationship between volume of gas gas and the reading of Bourdon Bourdon Gauge. Menggunakan jawapan anda di b(i) dan b(ii) nyatakan satu hubungan antara antara isipadu gas dengan bacaan Tolok Bourdon.

…………………………………………………………………………………… …………………………………… …………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

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PERLIS 2012, question 5

Examiner ‘s use

(a)

Kinetic energy energy of mercury atoms is zero as temperature drops to near absolute zero. Tenaga kinetik atom merkuri adalah kosong pabila suhu mendekati sifar mutlak. What is absolute zero? Apakah sifar mutlak?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) Diagram 5.1 shows a sealed box at room temperature. Rajah 5.1 menurjukkan satu kotak yang tertutup dan kedap berada pada suhu bilik.

Rajah 5.1 Diagram 5.1 / Rajah (i)

The box contai contains ns a large large number of of air molecule molecules. s. On Diagram 5.1, draw a possible path of one of the air molecules, as it moves inside the box. Kotak itu mengandungi banyak molekul udara. Pada rajah 5.1 , lukis laluan yang mungkin dibuat oleh satu molekul udara dalam kotak itu.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Explain how air molecules in the box create create a pressure on the the inside walls, walls, Terangkan bagaimana molekul udara menyebabkan tekanan pada dinding dalam kotak.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 mark / 2 markah markah] (iii) Why this pressure rises as the temperature temperature of the air in the box increases. Mengapakah tekanan dalam kotak meningkat apabila suhu meningkat?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (c)

Air in a cylinder cylinder is compressed slowly, slowly, so that the temperature does not rise. The The pressure changes from from 2.0 x105 Pa to 5.0 5.0 x 105 Pa. The original volume was 0.35m3. Calculate the new volume. Udara dalam satu silinder dimampatkan perlahan-lahan supaya suhunya tidak meningkat. Tekanan udara 5 5 3 meningkat dan 2.0 x10 Pa kepada kepada 5.0x 10 Pa. Isipadu asal ialah 0.35 m . Hitungkan isipadu baru.


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PAHANG2013, question 5

Examiner ‘s use

Rajah 5.1 and Rajah 5.2 menunjukkan satu susunan radas yang digunakan dalam eksperimen berkaitan dengan suatu hukum fizik. Diagram 5.1 and Diagram Diagram 5.2 shows the arrangement of aparatus used in eperiment regarding to a physics law.

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(d) Namakan Namakan hukum fizik fizik terlibat terlibat di 5(c). Name the physics law involved in 5(c).

…………………………………………………………………………………… …………………………………… …………………………………………………………………………………………… ………………………………………………….. …….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (e) Terangkan Terangkan mengapakah gelembung-gelembung gelembung-gelembung udara yang dikeluarkan dikeluarkan oleh seekor ikan ikan semakin mengembang apabila bergerak ke permukaan air? Eplain why the air bubbles formed by a fish expand as they float towards the surface surface of water.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 2 mark mark / 2 markah markah]


(a)


Nyatakan Nyatakan fungsi fungsi Tolok Bourdo Bourdon. n. State the function of Bourdon Gauge.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) Berda Berdasar sarkan kan Rajah 5.1 dan Rajah 5.2, bandingkan; Diagram 5.2 , compare; Based on Diagram 5.1 and Diagram (i)

Bacaan Bacaan Tolok olok Bourdo Bourdon. n. The reading of Bourdon Gauge.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Isipadu Isipadu udara dalam dalam bekas tertut tertutup. up. The volume of the air in the airtight container

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

(iii) (iii) Suhu udara udara dalam bekas kedap kedap udara. The temperature of the air in the airtight container.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (c) Berdasarkanjawapan anda dalam 5(b)(i) dan 5(b)(ii), 5(b)(ii), nyatakan hubungan antara bacaan tolok Bourdon dan isipadu isipadu udara terperangkap. Based on your answer in 5(b)(i) and 5(b)(ii), state the relationship relationship between the reading of Bourdon Gauge and the volume of trapped air.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

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JOHOR 2008, question question 6

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(d) If the amount amount of heat absorbed absorbed by the the ice cube is 6.72 x10 x103 J, calculate the specific latent heat of fusion. 3 Jika jumlah haba yang diserp oleh ketulan ais itu ialah 6.72 x 10 J, hitung haba pendam tentu pelakuran.

Diagram 6.1 shows a series of observation and record made by a student on a melting ice cube that is put in a metal plate. Rajah 6.1 menunjukkan satu siri pemerhatian dan catatan yang dibuat oleh seorang pelajar tentang peleburan seketul ais di dalam satu bekas logam. The ice start to melt Ais mula melebur

All the ice melted Kesemua ais telah melebur

[2 mark / 2 markah markah] (e) Mass of ice = 20 g Jisim ais = 20 g Temperature Temperature of ice = 0°C Suhu ais = 0°C Time = 0 s Masa = 0 s Temperature Temperature of the me tal plate = 20°C Suhu bekas logam = 20°C

Mass of ice water = 20 g Jisim cecair ais = 20 g Temperature Temperature of ice water = 0°C Suhu cecair ais = 0°C Time=60s Masa=60s Water droplets form on the metal plate Titisan air terbentuk di bekas logam

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah]

Rajah 6.1 Figure 6.1 / Rajah (a)

Name two sources where the ice cube obtained obtained the heat to change into ice water. water. Namakan dua punca di mana ketulan ais itu mendapat haba untuk menukar menjadi cecair ais.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [2 marks / 2 markah] (b) State the change in physical state when the ice cube is melted melted into ice water. water. Nyatakan perubahan keadaan fizik apabila ketulan ais itu itu melebur merjadi cecair ais.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (c) (i)

Why water droplets are formed on the outer surface surface of the metal metal plate? Mengapa titisan air terbentuk di permukaan luar bekas logam logam itu?

Name the physics physics quantit quantity y that is involved involved when when ice cube change change to water water at constant constant temperatu temperature. re. Namakan kuantiti fizik yang terlibat apabila apabila ais bertukar menjadi air pada suhu tetap.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Why the temperature temperature is remain remain constant when ice melts to water? water? Mengapa suhu kekal tidak berubah apabila ais bertukar menjadi air?

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah]

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PAHANG2012, question 6

Examiner ‘s use

Diagram 6.1 and Diagram 6.2 show two identical pistons with a fixed mass of gas and a same mass of load on each of the pistons. Diagram 6.1 shows the positions of piston at room temperature. Diagram 6.2 shows the positions of piston when heated until certain temperature. Rajah 6.1 dan Rajah 6.2 menunjukkan dua silinder yang sama saiz mengandungi gas yang sama pada jisim tetap dan pemberat yang sama jisim diletakkan di atas setiap setiap omboh. Rajah 6.1 menunjukkan kedudukan omboh pada suhu bilik. Rajah 6.2 menunjukkan kedudukan omboh bila dipanaskan sehingga suhu tertentu.

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(c) Name the the gas law law involved involved.. Namakan hukum gas yang terlibat.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (d) What will happen to the the height of the piston, h 1 on diagram 6.1 if the mass of the load decreases? Give a reason for your answer. Apakah yang berlaku kepada tinggi omboh h1 , pada Rajah 6.1 jika jisim pemberat dikurangkan? Berikah satu sebab bagi jawapan.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 2 mark mark / 2 markah markah]

Figure 6.1 / Rajah Rajah 6.1

( a) a)

Figure 6.2 / Rajah Rajah 6.2

O bs bs er er ve ve diagram 6.1 and diagram 6.2. Perhatikan rajah 6.1 dan rajah rajah 6.2. (i)

Compare Compare the the height height of of the the piston. piston. Bandingkan ketingian piston

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Compare Compare the tempera temperature ture of the the gas. Bandingkan suhu gas tersebut.

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (b) State the relationship between between temperature and height of the piston for the the cylinder. Explain Explain your answer. Nyatakan hubungan antara suhu dengan tinggi omboh pada silinder itu. Jelaskan jawapan anda.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 3 mark mark / 3 markah markah]

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PENANG 2012, ques question tion 6 Diagram 6.1 shows ice melting in a glass. The initial mass of the ice is 0.20 kg. Rajah 6.1 menunjukkan ais melebur di dalam sebuah gelas. Jisim awal ais itu ialah 0.2 0kg. menunjukkan

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500 g of water at 30 °C is placed placed in the freezer freezer of a refrigerator. refrigerator. 500 g air pada 30 °C diletakkan ke dalam peti pembeku sebuah peti sejuk. [Specific latent heat of fusion fusion of ice / Haba Haba pendam tentu pelakuran ais = 3.36 x 105 J kg-1] [Specific heat capacity of water / Muatan haba tentu air = 4 200 J kg-1 °C-1] (i)

Explain Explain the meaning meaning uspecif uspecific ic heatcapacity of of water water is 4 200 J kg-1 °C-1 Terangkan maksud “muatan haba tentu air ialah 4 200 J kg -1 °C -1

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 markah] (ii) Calculate the heat removed when when the water water is cooled to 0 °C. Hitungkan haba yang dikeluarkan apabila air itu disejukkan disejukkan hingga ke 0°C.

Figure 6.1 / Rajah 6.1

(a) Explain in terms terms of energy energy why the the reading of the thermometer, thermometer, Terangkan dalam sebutan tenaga men gapa bacaan termometer itu, (i) Remains Remains constant constant for for the first 20 minutes. minutes. Kekal malar untuk 20 minit yang pertama. pertama. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 / 1 markah] markah] (ii) Increases Increases after after 20 minutes. minutes. Meningkat selepas 20 minit. ………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [1 mark / 1 / 1 markah] markah] (b) Calculate the heat absorbed by the ice during the first first 20 minutes. minutes. Hitungkan haba yang diserap oleh ais itu semasa semasa 20 minit yang pertama. [Specific latent heat of fusion fusion of ice / Haba pendam tentu pelakuran ais = 3.36 x 105 J kg-1]

[2 marks / 2 / 2 markah] markah ] (c) Which statement correctly correctly describes the water in the glass after it is left for a few hours. Mark (√) in the the correct box. Pernyataan manakah yang memerihalkan memerihalkan dengan betul tentang air dalam gelas itu selepas dibiarkan dibiarkan selama beberapa jam. Tanda (√) pada kotak yang betul. There is no transfer of energy between the water and the surroundings Tiada pemindahan tenaga antara air dan persekitaran There is no net transfer of energy between the water and the surroundings Tiada pemindahan bersih tenaga antara air dan persekitaran [1 mark / 1 / 1 markah] markah]

[2 marks / 2 markah]

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For

PAHANG 2013, question 7

Examiner ‘s use

Rajah 7.1 menunjukkan susunan radas untuk menentukan muatan haba tentu bagi satu bongkah aluminium berjisim 1.0 kg. Bacaaan termometer direkodkan apabila ia mencapai keseimbangan terma dengan bongkah aluminium. Diagram 7.1 shows the arrangement of the aparatus to determine the specfic heat capacity of an aluminium block with mass 1.0 kg. The thermometer reading is recorded when it reached thermal equilibrium with the aluminium block.

(d)

Nilai muatan haba tentu yang diperolehi dalam dalam 7(c) lebih besar daripada nilai nilai sebenar. sebenar. Beberapa pengubahsuaian pengubahsuaian perlu dilakukan kepada bahan pembalut dan dinding bebuli kaca untuk menambah kejituan bacaan suhu. Nyatakan pengubahsuaian yang sesuai dan berikan berikan satu sebab untuk pengubahsuaian itu. The value of specfic heat capacity obtained in 7(c) is higher than the actual value. Some modifications need to be done to the material of the wraper and the wall of the glass bulb to increase the accuracy of the temperature reading. State the suitable modification and give one reason for the modfication. (i)

Jenis bahan bagi bahan pembalut pembalut X: Type of the X wraper material:

………………………………………………………………………………………………………………...... Reason / sebab

………………………………………………………………………………………………………………...... [2 mark / 2 markah markah] (ii) Ketebalan Ketebalan dinding dinding bebuli bebuli kaca: kaca:

Thickness of the glass bulb‘s wall: ………………………………………………………………………………………………………………......

Reason / sebab

………………………………………………………………………………………………………………...... [2 mark / 2 markah markah] Diagram 7.1 / Rajah Rajah 7.1

(a)

Apakah Apakah maksud maksud muatan muatan haba haba tentu? tentu? What is the meaning of specific heat capacity?

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ l mark / 1 markah] (b) Terangkan Terangkan bagaimana keseimbangan keseimbangan terma dicapai antara blok aluminium aluminium dan termometer. termometer. Explain how a thermal equilibrium is achieved between between the aluminium block and the termometer. termometer.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… …………………………………………………. ………. . …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [ 3 mark mark / 3 markah markah] (c) Pemanas rendam membekalkan 27 kJ tenaga kepada bongkah aluminium.Kenaikan suhu ialah 25 °C. The immersion heater supplied 27 kJ of energy to the aluminum block. The temperature temperature rise is 25 °C. Hitungkan muatan haba tentu bongkah aluminium. Calculate the specfic heat capacity of the aluminum block.


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(i)

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Table 8.1 shows the characteristics of two different ice boxes. Jadual 8.1 menunjukkan ciri-ciri bagi dua kotak ais yang berbeza.

Examiner ‘s

A solid substance of mass mass 0.05 kg is heated using an immersion heater of 240V, 240V, 1 kW for 1.0 minute until its temperature is 78°C Suatu bahan pepejal berjisim berjisim 0.05 kg dipanaskan menggunakan pemanasrendam 240V, 1 kW selama 1 minit sehingga suhunya adalah 78°C. (a)

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Ice box Kotak ais

What What is is the the meani meaning ng of of tempe temperat rature ure?? Apakah yang dimaksudkan dengan suhu?

R

………………………………………………………………………………………………………………......

S

………………………………………………………………………………………………………………......

T

[1 mark / 1 markah] U

(ii) Calculate the specific specific heat cpacity of the substance if the the initial temperature temperature of the substance is 20 °C? Hitung muatan haba tentu bagi bahan itujika suhu awal bahan itu adalah 20°C?

Material X Bahan X

Air Udara Polystyrene Polisterin Polystyrene Polisterin Air Udara

Specific heat capacity of inner box Muatan haba tentu bagi kotak dalam Small Kecil Big Besar Small Kecil Big Besar

Diameter of double walled tube Diameter bagi tiub tiub dinding dua lapis Small Kecil Big Besar Big Besar Big Besar

Table8.1 Table8.1 / Jadual Jadual 8.1

Based on Table 8.1, state the suitable characteristics characteristics of the ice box to be used as efficient ice storage. Give one reason for suitable characteristics. Berdasarkan Jadual 8.1 , nyatakan ciri-ciri kesesuaian kotak ais untuk d igunakan sebagai tern pat simpanan ais yang cekap. Beri satu sebab untuk kesesuaian ciri itu. ( i) i)

M at at er er ia ia l X / Bahan Bahan X :

………………………………………………………………………………………………………………...... [2 mark / 2 markah markah] (b)

Reason / sebab

………………………………………………………………………………………………………………......

The substance is then then put into a beaker filled filled with water water of mass 2.0 kg and temperature temperature 28°C. Bahan itu kemudiannya diletakkan ke dalam bikar berisi airbeijisim 2.0 kg dan suhu 28°C.

………………………………………………………………………………………………………………...... [2 mark / 2 markah markah]

Calculate the final temperature of the substance and water. Hitung suhu akhir bagi bahan itu dan air. air. [Specific heat capacity of water water / Muatan Jkg-1 °C-1) Muatan haba tentu bagi air = 4 200 Jkg

(ii) The specific specific heat heat capacity capacity of inner box box Muatan haba tentu bagi kotak dalam:

………………………………………………………………………………………………………………...... Reason / sebab

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 mark / 2 markah markah] (iii) (iii) Diameter Diameter of double double walled walled tube: Diameter bagi tiub dinding dua lapis.

[2 mark / 2 markah markah] (c) Diagram 8.1 shows parts of the ice box used to store ice. Rajah 8.1 menujukkan bahagian bagi kotak ais.

………………………………………………………………………………………………………………...... Reason / sebab

………………………………………………………………………………………………………………...... ………………………………………………………………………………………………………………...... [2 mark / 2 markah markah] (d)

Based on the answers answers in 8(c) (i), 8(c)(ii) and 8(c)(iii), 8(c)(iii), determine the the most suitable ice ice box to be used as an efficient ice storage Berdasarkan jawapan di 8(c) (i), 8(c)(ii) dan 8(c)(iii), 8(c)(iii), tentukan kotak ais yang paling sesuai digunakan digunakan sebagai tempat simpanan ais yangefisien.

…………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. …………………………………………………………………………………… …………………………………… ………………………………………………………………………………………… ………………………………………………….. ……….. [1marks/ 1 markah markah]

Figure8.1 Figure8.1 / Rajah Rajah 8.1

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BAHAGIAN B Section B Bahagian B [20 marks] [20 markah] Answer any one question. Jawab mana-mana mana-mana satu soalan.


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Diagram 9.3 shows the phenomenon of sea breeze. Rajah 9.3 menunjukkan fenomena fenomena bayu laut.

Diagram 9.1 and Diagram 9.2 show the heating curves obtained when 50 g and 80 g of the solid substance are heated respectively. respectively. The melting point of the substance is 78°C. Rajah 9.1 dan Rajah 9.2 menunjukkan lengkung pemanasan yang diperolehi apabila 50 g dan 80 g bahan itu dipanaskan masing-masing. Takat leur bahan itu adalah 78 °C.


Using thc concept of specific heat capacity, explain how the phenomenon of sea breeze occurs. Menggunakan konsep muatan haba tentu, terangkan bagaimana fenomena bayu laut berlaku. [4 mark / 4 markah] (c) Diagram 9.1 / Rajah Rajah 9.1

Diagram 9.4 shows a design of central heating system used in cold country to heat and kccp houses warm. Rajah 9.4 menunjukkan suatu rekabentuk sistem pemanasan berpusat yang digunakan di negara yang bercuaca sejuk untuk memanaskan dalam runiah.


(a) (i)


What What is the meamng meamng of melt melting ing point? point? Apakah maksud takat lebur? [1 mark / 1 markah]

(ii) Based Based on the information information and the observati observation on on Diagram 9.1 and Diagram 9.2, compare the mass, the time taken to reach the melting point and tile time taken by the substance to change into liquid completely. Relate the mass and the time taken by the substance to change into liquid completely to make a deduction on the relationship between the mass and the laten heat of fusion absorbed by time substance. Berdasarkan maklumat dan pemerhatian pada Rajah 9.1 dan Rajah 9.2. Bandingkan jisiimdan masa yang diambil unlukmencapai takal lebur lebur dan masa yang diambil diambil untuk bahan itu berubah kepada cecair sepenuhnya. Hubungkaitkan antara jisim dengan masa yang diambil untuk bahan berubah berubah kepada cecair sepenuhnya untuk membuat kesimpulan tentang hubungan antara jisim dengan haba pendam pelakuran yang diserap dalam bahan itu [5 mark / 5 markah]

Suggest and explain how to build a house centralheating System which can function effectively based based on the following aspects: Cadang dan terangkan bagaimana unruk meinbina suatu sistem penyejukan berpusat sebuah rum ah yang boleh berfungsi dengan cekap berdasarkan aspek-aspek berikut i)

The specific specific heat heat capaci capacity ty of the liquid liquid Muatan haba tentu cecair

ii)

The boiling boiling point point of of the the liquid liquid Takat didih cecair

iii) The properties properties of material used for transmission transmission pipe Sifat bahan yang digunakan untuk paip penghantaran cecair iv)

The size of the the fan used to blow blow the heat from from radiator radiator Saiz kipas yang digunakan untuk nieniup haba daripada radiator [10 mark / 10 markah]

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JOHOR 2011 question 9

Examiner ‘s use

Diagram 9.1 shows two flying pans M and N that are made of different material with different specific heat capacity are used to boil the same volume of water. Diagram 9.2 shows the time taken for the water to boil. When boiling, the fiylng pan and the water are in thermal equilibrium. Rajah 9.1 menunjukkan dua kuali M dan N yang yang diperbuat daripada bahan yang berbeza, dengan muatan haba tentu yang berbeza, digunakan untuk mendidihkan air yang sama isipadu. Rajah 9.2 menunjukkan masa yang digunakan untuk mendidihkan air. Ketika air mendidih, kuali den air berada dalam keseimbangan terma.

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Diagram 9.3 shows the cross-section of a pressure cooker. Rajah 9.3 menunjukkan keratan rentas sebuah periuk tekanan

[Assume frying pan M and frying pan N are of the same size and same thickness] [ Anggap Anggap saiz dan ketebalan bag! kuali M den kuali N adalah sama]


You are required to give some suggestions to design a pressure cooker which can cook food in a shorter time. Using the knowledge on heat, pressure and the properties of materials, explain the suggestions based on the following aspects: Anda dikehendaki memben beberapa cadangan untuk mereka bentuk sebuah penuk tekanan yang boleh boleh memasak makanan dalam masa yang Iebih singkat. Menggunakan pengetahuan tentang haba, tekanan dan sifat-sifat sifat-sifat bahan, terangkan cadangan itu berdasarkan aspek-aspek bedkut:


(i)

Material Material used for for the base of of the pot. Bahan yang digunakan untuk dasar periuk.

(ii) Material Material used used forthe handle handle of the pot. Bahan yang digunakan untuk pemegang periuk. (iii) Thickness of the wall of the pot. ketebalan dinding periuk Diagram 9.2 / Rajah Rajah 9.2

(a)

(i)

(iv) Safety Safety of the pressure pressure cooker. cooker. Keselamatan periuk tekanan.

What What is the the meanin meaning g of therm thermal al equil equilibr ibrium ium?? Apakah maksud keseimbangan terma? [1 mark / 1 markah]

( iiii ) U si si ng ng Diagram 9.1 and Diagram 9.2 compare the specific heat capacity of the frying pan, the time taken for the water to boil and the change in temperature. Relate the specific heat capacity of the frying pan with the time taken for the water to boil.Make a deduction regarding the relationship between the specific heat capacity of the frying pan and the rate of change in temperature of the frying pan. Menggunakan Rajah 9.1 dan Rajah 9.2 , bandingkan muatan haba tentu kuali, masa yang diambil oleh air untuk mendidih den perubahan dalam kenaikan suhu. Hubungkaitkan muatan haba tentu kuali dengan masa yang diambil oleh air untuk mendidih. Buat kesimpulan tentang hubungan antara muatan haba tentu kuali kuali dengan kadar kenaikan suhu bagi kuali . [5 mark / 5 markah] (b)

The amountof heat needed to increase the temperature temperature of 1 kilogram kilogram water by 1°C in the frying pan M and frying pan N are Q1 and Q2 respectively. Jumlah haba yang.diperlukan untuk rneningkatkan suhu 1 kilogram kilogram air sebanyak 1°C bagi kuali M dan kuali N adalah masing-masing Q1 dan Q 2 . (i )

Co mp mp ar ar e Q1 and Q2. Give one reason for this answer. Bandingkan Q1 , dan Q 2. Beri satu sebab bagi jawapan ini. [2 mark / 2 markah]

( iiii ) U si si ng ng Diagram 9.1 and Diagram 9.2, name two types of heat that are involved during heating and boiling. Berdasarkan Rajah 9.1 dan Rajah 9.2 , namakan due jenis haba yang terlibat ketika pemanasan dan pendidihan. [2 mark / 2 markah]

(v) Way to preven preventt leakage leakage of steam. steam. Cara untuk mencegah kebocoran kebocoran stim. [10 mark / 10 markah]

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For

KEDAH 2011 2011 question 9

Examiner ‘s use

Diagram 9.1 shows two beakers A and B containing water at 0°C, with beaker A containing some pieces of ice. Rajah 9.1 menunjukkan dua buah bikar A A dan B yang berisi air pada 0°C, dengan bikar A A mengandungi beberapa ketul ais.

Suggest and explain how the food to be fried can be cooked in a short time based on the following aspects of the material of the wok and the cooking oil. Cadang dan terangkan bagaimana makanan yang digoreng boleh menjadi masak dalam masa yang singkat berdasarkan aspek-aspek berikut mengenai bahan kuali dan minyak masak Material of the wok: Bahan kuali:


What is is the meanin meaning g of tempera temperature? ture? Apakah makud suhu?

(b)

(i)

specific heat capacity muatan haba tentunya

•

thermal conductivity kekonduksian termanya

•

melting point takat leburnya

•

Cooking oil Minyak masak

•

boiling point / takat didihnya


Diagram 9.2 shows the temperature of the water in beaker A and beaker B after 10 minutes. Rajah 9.2 menunjukkan suhu bagi air dalam bikar A A dan bikar B B selepas 10 minit.

(a)

•

[10 mark / 10 markah] [1 mark / 1 markah]

Name the the physical physical quantity quantity involv involved ed in the the melting melting of of the ice. Namakan kuantiti fizik yang terlibat dalam peleburan ais. [1 mark / 1 markah]

(ii) Using the the kinetic kinetic theory of matter: matter: V Dengan menggunakan teori kinetic jirim

•

Explain why the temperature of the water in beaker A remains constant at0°C Terangkan mengapa suhu air dalam bikar A kekal malar padá 0°C

•

Explain why the temperature of the water in beaker B has risen. Terangkan mengapa suhu air dalam bikar B telah naik. [4 mark / 4 markah]

(c)

Relate the temperature temperature increase of a substance to its specific specific heat capacity. capacity. Use this relationship relationship to explain why a piece of iron becomes hotter than a piece of wood of the same mass when both absorb the same amount of heat. Hubungkaitkan kenaikan suhu suatu bahan dengan muatan haba tentunya. Gunakan hubungan ini untuk menerangkan mengapa seketul besi menjadi lebih panas daripada seketul kayu yang mempunyai jisim yang sama selepas kedua-duanya menyerap kuantiti haba yang sama. [4 mark / 4 markah]

(d)

Diagram 9.3 shows food being fried in a wok of cooking oil. Rajah 9.3 menunjukkan makanan digoreng dalam sebuah kuali yang m engandungi minyak masak.


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N9 2011, 2011, ques question tion 9 Figure 9.1 shows two test tubes containing aluminium dust and copper dust of the same mass but having different specific heat capacity. capacity. Both the test tubes are heated with the same rate for a same period of time. Rajah 9.1 menunjukkan dua tabung uji mengandungi serbuk aluminium dan serbuk kuprum yang sama jisim tetapi menunjukkan mempunyai muatan haba tentu yang berbeza. Kedua - dua tabung uji dipanaskan dengan kadar yang sama untuk tempoh masa yang sama.

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(b)

Explain why the body of a cooking pot is is made of good heat conductor whereas the handle handle of the pot is made of poor heat conductor. Terangkan mengapakah periuk memasak diperbuat daripada konduktor haba yang baik sementara p emegangnya diperbuat daripada konduktor haba yang lemah. [4 mark / 4 markah]

(c)

A family is having a picnic atPort Dickson beach. An open aluminium container with some some ice cubes is used to cool the packet drinks as shown in the Figure 9.2. Sebuah keluarga sedang berkelah dipantai Port Dickson. Sebuah bekas aluminium yang terbuka dengan beberapa ketulan ais digunakan untuk menyejukkan minuman dalam kotak seperui Rajah 9.2.


Use appropriate concepts in physics, explain the modifications required to the above aluminium container so as to effectively Dengan menggunakan konsep flzik yang bersesuaian, terangkan pengubahsuaian pengubahsuaian yang diperlukan kepada bekas aluminium supaya berfungsi dengan lebih berkesan untuk


(a)

Table 9.2 shows some important data for aluminium and copper dust. Jadual 9.2 menunjukkan beberapa data penting berkenaan serbuk aluminium dan kuprum. Temperaturebefore heating / °C Suhu sebelum dipanaskan / °C

Temperatureafter heating / °C Suhuselepas dipanaskan / °C

Specific heat capacity / Jkg -1 °C-1 Muatan Haba Tentu Jkg-1°C -1

Aluminium dust Serbuk Aluminium

35

50

900

Copper dust Serbuk Kuprum

35

70

380


(a)

(i)

What What is meant meant by by specf specflc lc heat heat capaci capacity? ty? Apakah yang dimaksudkan dengan muatan haba tentu? [1 mark / 1 markah]

(ii) Using Using the informa information tion given given in Table 9.2, compare the temperature rise and the specific heat capacity of aluminium and copper dust. Dengan menggunakan maklumat yang diberikan dalam Jadual 9.2, bandingkan suhu dan muatan haba tentu bagi serbuk aluminium dan kuprum. [1 mark / 1 markah] (iii) Relate the amount of heat supplied supplied with the temperature rise for aluminium aluminium and copper dust. Hence state the relationship between specific heat capacity and the amount of heat required for the same temperature rise of a substance. Hubungkaitkan jumlah haba yang dibekalkan dengan peningkatan suhu oleh serbuk aluminium aluminium dan kuprum. Seterusnya nyatakan hubungan anlara muatan haba tentu dan jumlah haba yang diperlukan untuk peningkatan suhu yang serupa oleh sesuatu bahan. [4 mark / 4 markah markah]

Cool packet packet drinks drinks in a shorter shorter time. time. Menyejuk kotak minuman dalani tempoh yang singkat.

(b) keep the packet packet drinks drinks remain remain cold for a longer longer period. period. Memastikan kotak minuman kekal sejuk untuk tempoh yang lama. [10 mark / 10 markah]

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KEDAH 2012, question 9

Examiner ‘s use

Diagram 9.1 shows the heating curves for liquid M and liquid N. Both liquids have mass 200 g and were heated with a 200 W heater for 5 minutes. R ajah 9.1 menunjukktin lengkung-lengkung lengkung-lengkung pemanasan bagi cecair M M dan cecair N N . Kedua-dua cecair mempunyai jisim 200 g dan dipanaskan oleh pemanas 200 W selama 5 minit.

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Diagram 9.2 shows an electric rice cooker. Rajah 9.2 menunjukkan sebuah periuk nasi elektrik.


You are required to give suggestions to modify the electric rice cooker to become a slow cooker that can cook food slowly with low heat to maintain the nutritional value and taste of the food. Anda dikehendaki mem beri cadangan untuk mengubahsuai periuk nasi elektrik itu untuk menjadi sebuah periuk perlahan yang boleh memasak makanan dengan perlahan menggunakan haba rendah untuk mengekalkan khasiat dan kelazatan makanan itu.

Diagram 9.1 / Rajah Rajah 9.1 Table 9.1 gives the values of the specific heat capacity of liquid M and liquid N. Jadual 9.1 memberikan nilai-nilai muatan haba tentu bagi cecair M dan cecair N N .

Liquid Cecair M N

Specific heat capacity Muatan haba tentu -1 -1 (J kg °C ) 1200 1800

Explain your suggestions based on the following aspects: Terangkan cadangan anda berdasarkan aspek-aspek berikut: (i)

(ii) the type type of material material of the the inner pot pot jenis bahan periuk dalam

Table Table 9.1 / Jadual Jadual 9.1

(a)

What is the the meaning meaning of specific specific heat capacity? capacity? Apakah maksud muatan haba tentu? [1 mark / 1 markah]

(iii) (iii) the space betwee between n the inner pot pot and outerpot ruang antara periuk dalam dan periuk luar (iv) the pcwer pcwer of the heating heating element element kuasa element pemanas

(b) Based Based on the the heating heating curves curves in Diagram 9.1: Berdasarkan lengkung-lengkung lengkung-lengkung pemanasan dalam Rajah 9.1: (i)

the type type of material material of of the outer pot jenis bahan periuk luar

(v) the cover cover of the the outer outer pot pot penutup periuk luar

Compare Compare the heat heat energy energy supplie supplied d to liquid liquid M and liquid N. M dan cecair N N . Bandingkan tenaga haba yang dibekalkan kepada cecair M

[10 mark / 10 markah] (ii) Compare the the specific heat capacity capacity of liquid M and liquid N. Bandingkan muatan haba tentu bagi cecair M M dan cecair N N . (iii) Compare the final final temperature temperature of liquid liquid M and liquid N. M dan cecair N N . Bandingkan suhu akhir cecair M (iv) Compare the rate rate of increase increase of temperature temperature of liquid liquid M and liquid N. M dan cecair N N . Bandingkan kadar kenaikan suhu cecair M (v)

Relate the specific specific heat capacity of the liquid to its rate of increase in temperature. Hubungkaitkan muatan haba tentu cecair kepada kadar kenaikan suhunya. [5 mark / 5 markah markah]

(c)

Explain Explain why water water is used as a cooling cooling liquid liquid in engines. engines. Terangkan mengapa air digunakan sebagai cecair p enyejuk dalam enjin. [4 mark / 4 markah markah]

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PERLIS 2012, question 9

Examiner ‘s use

Diagram 9.1 show water flow from a river in a remote place. Diagram 9.2 shows area of sea close to the river. The temperature of the water in the river is 18 °C while the temperature of sea water is 26 °C Rajah 9.1 menujukkan aliran air sungai dikawasan pendalaman sementara rajah 9.2 menujukkan kawasan laut berhampiran muara sungai tersebut. Didapati bahawa suhu air sungai itu beradapada 18 °C sementara suhu air lautpada masa yang sama ialah 26 °C


(a)

(i)


What What is is the the meanin meaning g of of temp temper eratu ature re Apakah yang dimaksudkan dengan suhu [1 mark / 1 markah]

(ii) (ii) Obse Observ rvee Diagram9.1 and Diagram 9.2, compare the quantity of water and the ratio of land area to water. Relate the quantity of water and the ratio of land area to water with water temperature to deduce a relevant physics concept Perhatikan Rajah 9.1 dan Rajah 9.2 , bandingkan kuantiti air dan nisbah keluasan daratan kepada air. Hubungkaitkan kuantiti air dan nisbah keluasan daratan kepada air dengan suhu air untuk membuat kesimpulan tentang satu konsep fizik yang sesuai. [5 mark / 5 markah markah] (iii) Explain why water obtain from well in a remote village is cooler than water in in a lake Huraikan bagaimanakah air perigi dikawasan pendalaman mempunyai suhu yang lebih rendah daripada air di dalam sebuah tasik. [4 mark / 4 markah markah]


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Diagram 9.3 shows the sketch of a bunggalow. You are required to give some suggestion to build a bunggalow which is very cool and comfortable withaut having to use any air- condition unit. Rajah 9.3 menujukkan lakaran sebuah bunglow. Anda dikehendaki untuk memberikan beberapa cadangan untuk membina sebuah bunglow yang sejuk dan selesa tanpa menggunakan alat penghawa dingin.

Explain your suggestion base on your knowledge on the following aspects: Terangkan cadangan anda berasaskan kepada pengetahuan anda tentang aspek-aspek berikut: i.

Loca Locati tion on of the the hous housee Lokasi yang sesuai

ii. ii.

Desi Design gn of of the the hous housee Rekabentuk rumah

iii.

Specific Specific heat heat capacity capacity of the materi material al use Muatan haba tentu bahan yang digunakan

iv. iv.

Colour Colour of the the hous housee Warna rumah [10 mark / 10 markah]

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SBP2012,, que SBP2012 questi stion on 9

Examiner ‘s use

Diagram 9.1 shows the heating curves of water and methylated spirit which is a type of alcohol. Rajah 9.1 menunjukkan lengkung pemanasan bagi air dan metilated spirit yang meripakan sjenis alkohol.

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( c) c) U si si ng ng Diagram 9.1 and the information given, explain why we feel much cooler when alcohol such as methylated spirit spills on our hand as comparedto water of the same amount. Menggunakan Rajah 9.1 dan maklumat yang diberikan, terangkan mengapa kita berasa berasa lebih sejuk apabila alkohol seperti spirit metilated tertumpah di atas tangan berbanding dengan air yang berjumlah sama. [4 mark / 4 markah markah] (d) Diagram 9.2 shows a frozen fish is put on a plate to defrost. The time taken to defrost the fish is more than two hours. Rajah 9.2 menunjukkan ikan yang beku diletakkan di atas sebuah pinggan kaca untuk dinyahbekukan. Masa yang diambil untuk menyahbeku adalah melebihi daripada 2 jam.


Using appropriate physics concepts, explain the suitable characteristics of a plate that can defrost more frozen fishes in a shorter time. The plate can be moved from one place to another. Menggunakan konsep-konsep fizik yang sesuai, terangkan sifat-sifat pinggan yang sesuai yang boleh menyahbeku lebih banyak ikan beku dalam masa yang lebih singkat. Pinggan itu boleh digerakkan digerakkan dan satu tempat ke tempat yang lain. Your answer should include the following aspects: Jawapan anda hendaklah mengandungi aspek-aspek yang berikut:


The specific heat capacity of water water / muatan haba tentu air = 4200 J kg-1 °C-1 The specific heat capacity of methylated methylated spirit / muatan haba tentu spirit metilated = 2400 J kg-1 °C-1 The latent heat of vaporisation vaporisation of water / haba pendam tentu pengewapan air = 2.26 x 106 J kg-1 The latent heat of vaporisation vaporisation of methylated spirit / Haba Haba pendam tentu pengewapan spirit metilated = 1.2x 10 6 J kg-1 (a)

What is the the meaning meaning of latent heat heat of vaporisat vaporisation? ion? Apakah yang dimaksudkan dengan haba pendam tentu pengewapan?

-

abil abilit ity y to to con condu duct ct heat heat kemarnpuan untuk mengalirkan haba

-

specif specific ic heat heat capa capacit city y of of plat platee muatan haba tentu pinggan

-

c ol olo ur ur of p la lat e warna pinggan

-

d en en si sit y o f p la la te te keturnpatan pinggan

-

s ur ur fa fa ce ce ar ar ea ea of of pl pl at at e luas permukaan pinggan.

[1 mark / 1 markah] (b) Based Based on the heating heating curves curves in Diagram 9.1 and the given information, Berdasarkan lengkungpemanasan dalam Rajah 9.1 dan maklumat yang diberikan, (i)

Compare the boiling boiling points of water and methylated methylated spirit, their specific heat capacities and the the time taken taken to boil. Bandingkan takat didih air dan spirit metilated, muatan haba tentu tentu dan masa untuk mendidihkan air dan spirit metilated. [3 mark / 3 markah markah]

(ii) Relate the boiling boiling point of liquid with with their specific heat capacity. capacity. Hubungkaitkan takat didih cecair dengan muatan haba tentu. [1 mark / 1 markah]

(iii) Deduce a relationship relationship between specific heat capacity and the time time to boil the liquid. Deduksikan hubungan antara muatan haba tentu dan masa untuk cecair mendidih. [1 mark / 1 markah]

[10 mark / 10 markah]

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N9 2013 question 9

Examiner ‘s use

kecil yang mengandungi air panas pada Rajah 7.1 dan Rajah 7.2 menunjukkan sebuah periuk besar dan sebuah periuk kecil 90°C. Periuk-periuk tersebut dibuat daripada bahan yang sama. Selepas 15 minit, suhu kedua-dua periuk air diukur lagi. Diagram 7.1 and Diagram Diagram 7.2 show a big pot and a small pot containing hot water at 90°C. The pots are made of the same material. After 15 minutes, the temperatures of both pots of water are measured again.


(a)

(i)


Apakah Apakah yang yang maksud maksud muatan muatan haba? haba? What is the meaning of heat capacity? [1 mark / 1 markah]

(ii) (ii) Guna Gunaka kan n Rajah 7.1 dan Rajah 7.2, bandingkan perubahan suhu air di dalam periuk besar dengan air di dalam periuk kecil. Seterusnya, simpulkan perbezaan di antara muatan haba air di dalam periuk besar dengan air di dalam periuk kecil. Using Diagram 7.1 and Diagram Diagram 7.2 , compare the change in temperature f the water in the big pot with the water in small pot. Hence, deduce the djerence between the heat ccpacily f the water in the big p ot with the water in small pot. [2 mark / 2 markah markah] (iii) (iii) Nyatakan Nyatakan hubungan hubungan antara antara jisim jisim objek dan muatan muatan haba objek. objek. State the relationship between the mass of an olject and the heat capacity of the object. [1 mark / 1 markah] (b) Dengan bantuan gambarajah, gambarajah, nyatakan perbezaan antara antara bayu laut dan bayu darat. With the aid of diagrams, state the differences between sea breeze and land breeze. [6 mark / 6 markah markah] (c) Dengan menggunakan konsep fizik fizik yang sesuai, cadang danjelaskan danjelaskan pembuatan periuk, termasuk tapak, badan badan dan pemegangnya. Jawapan anda perlu termasuk yang berikut: By using a suitable physics concept, suggest and explain the construction of a cooking pot, including its base, body and handle. Your answer should include the following: (i)

tahap keberkesan keberkesanan an perminda permindahan han haba haba the fectiveness of the heat transfer

(ii) kemudahan kemudahan penggunaan penggunaan ease of use (iii) (iii) keselamata keselamatan n kepada pengguna safety to users [10 mark / 10 markah]

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BAHAGIAN C Section C Bahagian C [20 marks] [20 markah] Answer any one question. Jawab mana-mana mana-mana satu soalan


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Study the characteristics of all the five thermometers based on the following aspects: Kaji semua ciri kelima-lima termometer itu berdasarkan aspek-aspek berikut:

Diagram 11.1 shows a thermometer clinic is used by a doctor to check the temperature of a patient’s body during medical treatment. Rajah 11.1 menunjukkan menunjukkan satu termometer klinik digunakan oleh seorang doktor bagi memeriksa suhu badan seorang pesakit semasa membuat rawatan. rawatan.

-

The freezi freezing ng poin pointt of the liqui liquid d used used Takat beku cecair yang digunakan

-

The boilin boiling g point point of the the liqu liquid id used used Takat didih cecair yang digunakan

-

The The colo colour ur of of the the liqui liquid d used used Wama cecair yang digunakan

-

The thickn thickness ess of glas glasss wall wall bulb bulb Ketebalan dinding bebuli kaca

Explain the suitability of the characteristics of the thermometer to be used for the research project. Determine the most suitable thermometer to be chosen and give one reason for your choice. Terangkan kesesualan ciri-ciri termometer untuk digunakan dalam projek penyelidikan itu, Tentukan termometer yang paling sesual dipilih dan berikan satu sebab sebab bagi pilihan anda. [10 mark / 10 markah]


(d)

(a) What is meant meant by temperature temperature?? Apakah yang dimaksudkan dengan suhu?

[1 mark / 1 / 1 markah] markah]

(b) According to the principle of thermal thermal equilibrium and the the working principle principle of a thermometer. thermometer. Explain how a doctor can check his patient temperature dusing the medical treatment. Merujuk kepada prinsip keseimbangan keseimbangan terma dan prinsip kerja termomefer, termomefer, terangkan bagaimana bagaimana seorang doktor dapat memeriksa suhu badan pesakit semasa membuat rawatan kesihatan. [4 mark / 4 / 4 markah] markah] (c)

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For Examiner ‘s use

PAHA NG 2011, question 11 - [4.1 - THERMAL EQUILIBRIUM]

thermometer which is not calibrated calibrated has a mercury mercury column of lengths L0 1 5.0 cm when Diagram 11.2 shows a thermometer the temperature is 0°C and L 100 is 25.0 cm when the temperature is 100°C. The mercury column, L θ is12.0 cm when put into liquid X. Rajah 11.2 menunjukkan sebuah termometer yang belum ditentu ukurkan mempunyai panjang turus L 0 =5.0 =5.0 cm apabila suhu adalah 0°C dan L 100 = 25.0 cm apabila suhu adalah 100°C. Panjang tunis merkuri, Lθ adalah12 adalah12 cm apabila diletakkan ke dalam cecair X .

Table 11.1 shows the characteristics of five thermometers P, Q, R, S and T. Jadual 11.1 menunjukkan menunjukkan ciri -ciri lima termometer, P, Q, R, S dan T .

Thermometer Termometer

Freezing point of liquid used Takat beku cecair yangdigunakan

Boiling point of liquid used Takat clidih cecair cecair Yang digunakan

P

-39 ºC

357 ºC

Q

-22 ºC

220 ºC

R

-114 ºC

78 ºC

S

-114 ºC

78 ºC

T

-40 ºC

25 ºC

Colour of liquid used Warna cecair Yang digunakan

Opaque Legap Colourless Jernih Opaque Legap Clear Clear red Merah jernih Colourless Jernih

Thickness of glass walled bulb Ketebalan Ketebalan dindi ng bebuli kaca

Thin Nipis Thick Tebal Thin Nipis Thick Tebal Thin Nipis


A research project is carried out on the weather of a region with the surrounding temperature is between -65°C to 20 °C. Thermometer is an equipment to be used for the research project. As a researcher, you are required to determine the most suitable thermometer to be taken with as one item of the equipment. Satu projek penyelidikan hendak dijalankan di suatu kawasan den gan suhu persekitaran antara -65°C dan 20° C. Termometer Termometer adalah anfara peralatan yang diperlukan dalam projek penyelidikan itu.Sebagai seorang penyelidik, anda diminta untuk menentukan termometer yang paling sesuai sebagai satu item peralatan yang perlu dibawa bersama.


(i)

Determine Determine the temperatur temperaturee of liquid liquid X. Tentukan suhu cecair X X itu. [2 mark / 2 markah]

(ii) Determine the value of the the temperature in 11 (c) (i) in Kelvin. Kelvin. Tentukan nilai suhu dalam 11(c) (i) dalam unit Kelvin. [1 mark / 1 markah] (iii) What is the length of the mercury column from the bulb bulb at temperatures 30° C? Berapakah panjang turus merkuri itu dari bebuli pada suhu 30° C? [2 mark / 2 markah]

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Examiner ‘s use

Diagram 12.1 shows an immersion heater used to boil water until it vaporizes. The immersion heater has a power rating of 500 watts, 230 V. Rajah 12.1 menujukkan sebuah pemanas rendam digunakan untuk mendidihkan air sehingga meruap. Pemanas rendam itu mempunyai kadaran kuasa 500 watts, 230 V.

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A manufacturer manufacturer wants to produce produce a new product as one one of the kitchen utensil. utensil. The new spatula is short, thick or slim handle. Five models of the spatula are given. Table 12.1 shows the shape and the characteristics of the spatula. Seorang pengusaha kilang hendak mengeluarkan satu produk baru peralatan dtpur. Sudip baru yang hendak dihasilkan itu adalah samada pendek, tebal atau nipis. Lima m odel sudip untuk pasaran diberikan. Jadual 12.1 menunjukkan bentuk dan ciri-ciri spatula tersebut.

Material Bahan

Specific Heat Capacity Kpasiti Haba Tentu Tentu -1 Jkg-1θ

Melting Point Takat lebur °C

Density Ketumpatan kg m-3

P

1720

27

910

Q

750

2000

4000

R

1350

2400

1050

S

850

670

2680

T

700

1100

2500

Shape cf handle Bentuk pemegang

short pendek tick tebal slim nipis tick tebal


( a) a)

( i) i)

Jadual 12.1 Table 12.1 / Jadual

W ha ha t is is m ea ea nt nt b y h ea ea t? t? Apa yang dimaksudkan dengan haba? [1 mark / 1 markah]

(ii) Sketch a graph to show the the heating curve of water to steam. Using Using theory kinetic of matter explain why the temperature remain unchanged while the heating is still on. Lakar graf untuk menunjukkan lengkung pemanasan perithahan dan air ke stim. Menggunakan Menggunakan teori kinetik jirim terangkan mengapa suhu tetap tidak berubah walaupun pemanasan diteruskan. diteruskan. [4 mark / 4 markah] (b)

Diagram 12.2 shows a method of cooking a fish by steaming on a pan filled with water. The water specific latent heat of vaporization is 2.26 x 10 6 Jkg-1. Rajah 12.2 menujukkan kaedah memasak ikan dengan mengukus di atas kuali yang berisi dengan air. Haba pendam tentu pengewapan bagi air adalah 2.26 x 106 Jkg-1. [4 mark / 4 markah]


(i)

slim nipis

What is the meaning of the specific latent latent heat of vaporization? vaporization? Apakah maksud haba pendam tentu pengewapan? [1 mark / 1 markah]

(ii) Describe how the fish is is cooked by the method shown shown in Diagram 12.2. Explain your answer. Huraikan bagaimana ikan boleh dimasak dengan menggunakan kaedah seperti dalam Rajah 12.2. [4 mark / 4 markah]

Explain the suitability of each characteristic of the m aterials in table 12.1 Determine the most suitable spatula for marketing purpose. Terangkan kesesuaian ciri-ciri setitp bahan di dalam jadual 12.1. Tentukan sudip yang paling sesuai untuk memasuki pasaran. [10 mark / 10 markah]

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For

MRSM 2012, question 12

Examiner ‘s use

Diagram 11.1 shows two kids alking on the beach during a h ot day. Rajah 11.1 menunjukkan dua kanak kanak berjalan di tepi pantai pada h ari yang panas. Q

370

R

127

S

557

Rajah 12.1 Diagram 12.1 / Rajah (a) Name the process of energy transfer from from the sun to the the earth. Namakan proses di mana lenaga dipindahkan dari matahari ke bumi. [1 marks / 1 markah markah] (b)

Explain why the kids prefer to alk along the waterfront waterfront rather than on the sand. sand. Terangkan kenapa kanak-kanak it lebih suka berjalan dipesisir pantai berbanding di atas pasir. [4 marks / 4 markah markah]

(c)

A solar water heater receives receives energy from the sun to heat up the water in its storage tank. tank. Table 11.1 shows our 1oof solar heater designs P, Q, R and S with different specifications. specifications. Study all the specifications, e plain the suitability of their characteristics for a water heater system and then etermine the most suitable design. Give reasons for your choice. Pemanas air solar menerima tenaga tenaga dari matahari unluk memanaskan air di di dalam tangki pensloran. Jadual 11.1 menunjukkan mpat rekabentuk pemanas solar bumbung P , Q , R dan S dengan spesfikasi yang berbeza. Kaji spesifikasi keempat-empat rekabentuk terangkan kesesuaian ciri-ciri untuk sistem pemanas air dan seterusnya tentukan rekabentuk yang paling sesuai. Beri sebab untuk pilihan anda. [10marks / 10 markah]

Solar heater Pemanas solar

Design Reka Bentuk

Specific heat capacity of water pipes Mualan haba tentu paip air (J kg-1 °C-1)

Table Table 12.1 / Jadual 12.1

(d)

A 500 g metal object at 90°C is placed in a beaker beaker containing 2 kg of of water at 30 °C. The final final temperature of the water water is 50 °C. Satu objek logam dengan jisim 500 g pada suku 90°C di masukkan ke dalam bikar yang mengandungi 2 kg air yang bersuhu 30°C. Suhu akhir air ialah 50°C. [specific heat capacity of water / Muatan haba tenlu air = 4200 4200 J kg-1 °C-1] (i)

Calculate Calculate the the amount of heat heat absorbed absorbed by the water. water. Hitung haba yang diserap oleh air. air. [2 marks / 2 markah markah]

(ii) Calculate the the specific heat capacity capacity of the metal. Hitung muatan haba tentu bagi logam tersebut. [3 marks / 3 markah markah] P

880

BAB 04 - HABA

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