SKEMA JAWAPAN JAWAPAN KERTAS 3 ( Peperiksaan Akhir Tahun Tahun Ting. 4 – 2011 ) 1 (a)
1
State the zerro error
0.03 mm (w/o unit) (b)
(i)
1
State the correct manipulated manipulated variable
Mass/Force / weight // m // F (ii)
1
State the correct responding responding variable
Thickness // t
(iii)
1
State one fixed variable correctly
Height// type of material sheet // density of tin sheet
(c)
6
Tabulate m,F,t and T
Give a tick ( ) based on the following: A
Columns of m, F, t,and T
B
Correct units for m, F, t,and T
C
D
E
F
All values of t correct
All values of T consistent to 2 d.p.
All values of F correct to 1 d.p.
All values of t and T consistent to 2 d.p.
m/g
F/N
t/mm
T/mm
200
2.0
4.45
4.42
300
3.0
3.74
3.71
400
4.0
3.25
3.22
500
5.0
2.64
2.61
600
6.0
1.90
1.87
Note for F : Accept e.c.f. from D and E
Total marks : 6
(d)
5
Draw correctly a graph of
T against F
Give a tick ( ) based on the following: A
-axis, F at the x -axis -axis T at the y -axis,
B
Correct units at both axes
C
Uniform scale at both axes
D
5 points plotted correctly
[Note : 3 or 4 points plotted correctly :
]
E
Best straight line
F
Minimum size of graph 5 x 4 big squares
(Big square : 2 cm x 2 cm) (From the origin to the last point)
Marks awarded :
Number of
Marks
7
5
5-6
4
3-4
3
2
2
1
1
Total marks : 5
(e)
1
State the correct relationship based on the straight line drawn For a straight line with negative gradient passing with y-axis interception,
Thickness is decrease linearly to force
16
Question 2 Section
2(a) (i)
Mark
1
Answer
Increases Bertambah
(a) (ii)
1
l = 10 cm
should have extrapolation
1 2(b) (i)
ekstrapolasi dilukis pada graf
Gradient : Draw the triangle on the graph
1
(minimum 8cm x 8cm) Show the substitution correctly
1
h = 25 - 10 70- 0 Correct answer
1 (b) (ii)
0.214 cm g
-1
(with correct unit )
k = ____1_____ 0.214 Correct answer
1 (c)
4.673 g cm =
-1
(with correct unit )
+
1 =
+
1 = 1
= 2. 336 g cm
-1
(with correct unit )
2(d)
1 State the precaution correctly
1
1.Eyes is perpendicular to the scale of reading as to avoid parallax error 2. Repeat the experiment and find the average value as to increase the accuracy
Total
12
Question Soalan 3. (a)
Answer Jawapan
(b)
(c) (i)
Marks Markah
State a suitable inference The depth of the tyre sink depends on its mass.
1
State a relevant hypothesis The larger the mass , the greater the pressure
1
State the aim of experiment To investigate the relationship between between mass and pressure. pressure.
1
(ii) State the suitable manipulated variables and responding variable (Quantity that can be measured) Manipulatd variable : mass Responding variable : pressure/depth of depression State the constant variable Cross sectional area of wooden rod
1
1
(iii) State the complete list of apparatus and materials Plasticine, slotted weight , wooden rod and meter rule
1
apparatus (iv) Draw the functional arrangement of the apparatus wei ht Meter rule
Wooden rod Plasticine
1
(v) State the method to control the manipulated variable
The apparatus is set up as shown in the diagram. Start the experiment with a mass of 100 g Placed the load of mass 100 g on the top of wooden rod as shown
1
on diagram State the method to measure the responding variable Measure the depth of depression depression made on the plasticine plasticine
1 Repeat the experiment at least 4 times with the values
Repeat the experiment experiment 4 times with mass 150g, 200 g, 250 g and and 300 g (Note : Based on SPM standard , at least five manipulated values required.) State how the data tabulated with the title MV and RV Mass/g Depth/ cm 100 150 200 250 300
1
1
State how the data is analysed, plot a graph RV against MV Depth
1
Mass
Total
12
NO
ANSWER
Marks
4(a)
Inference : The volume of the gas depends on the temperature which acts on it. Hypothesis: The larger the temperature, the larger is the volume of a fixed mass of gas. / The volume of a gas varies directly with its temperature.
1
(b)
(c)(i) Aim : To investigate investigate the relationship relationship between between the temperature and volume for a fixed mass of gas at a constant pressure. (ii)
(iii)
Variables : Manipulated : Gas temperature, T Responding : Gas volume, volume, V Fixed : Gas pressure,P or mass of gas, m Apparatus : beaker, stirrer, heater, capillary tube, sulphuric acid (con),
1
1
1 1 1
thermometer, metre rule, water, ice (iv)
Arrangement of apparatus: 1
thermometer
Capillary
heater
tube stirrer
Sulphuric acid power ℓ@V
supply
(v)
Procedure: 1. The apparatus apparatus is set up as shown shown in the diagram above. above. 2. Switch on the power supply so that the heater will heat the water. 3. Read thermometer when the temperature reach 30°C. 4. At the same time measure the length, ℓ of air of air trapped inside the capillary tube. (The volume of air is comply to the length of the air trapped) 5. Stir the water continuously, and repeat the experiment when the temperature reach 40°C, 50°C, 60°C and 70 °C.
1 1
1
(vi) Temperature,T / °C
Temperature,T / K
3
Volume, V / cm
30 40 50 60 70 (vii)
1
V cm
3
v/cm3 1 or T/K Θ
0
C
Volume of a fixed mass of gas is directly proportional to its temperature. TOTAL
12
