b3727-105508f_u8_5_ccnn

Name:

8

UNIT

Class:

1 What materials materials would you use to do these jobs? Complete the

sentences with the words from the box. There is one extra material. clear glass

wool

plastic

a.

Stop a hot water tank getting cold.

b.

Transfer Tr ansfer heat from one place to another.

c.

Make a window.

d.

Stop light passing from one place to another.

copper

wood

2 Choose the correct word to complete the sentences. a.

White light reflects / refracts seven different colours.

b.

Coal is black because it absorbs / reflects all light.

c.

 Albert Einstein Einstein / Isaac Newton discovered gravity.

d.

The Earth behaves like a giant magnet / nuclear reactor.

e.

An echo is when sound is reflected / refracted.

3 Complete the table with the words from the box.

energy type

source petrol in a car

a.

wind

sound

a torch b.

pedalling a bike

light

a battery swimming

kinetic

c.

d.

the Sun a guitar

chemical

4 Are these sentences true (T) or false ( F)? a.

All light on Earth comes from the Sun.

b.

Sound travels faster than light.

c.

Colours are simply the result of reflected light.

d.

Sound can travel through matter in any state.

1

Natural Science Primary 5 • Downloadable and printable © Ediciones Bilingües, S.L.

8

UNIT

5 Complete the chart with renewable energy sources.

advantages

energy source

doesn’t contaminate the environment

disadvantages

a.

is limited to certain geographic areas

b.

dam building damages animal habitats

doesn’t cause pollution

c.

can’t be used in all climates

is renewable

d.

causes air pollution

is clean

e.

can kill birds

doesn’t cause pollution

6 Match the non-renewable energy sources to their negative

consequences. You can match the same consequence more than once. 1. can

cause ecological disasters

2. causes a.

global warming

coal 3. produces

b.

oil 4. takes

c.

radioactive waste

millions of years to replace

uranium 5. pollutes

6. is

the air when you burn it

expensive to turn into energy

7 Tick (✔) the correct word and fill the gap. a.

Objectss with opposite charges Object attract

b.

each other other..

repel

refract

Static electricit electricityy is produced if we rub two metal

copper

objectss together. object non-metal

The Earth behaves like a magnet because it has a

c.

liquid metal core 2

solid crust

. north pole

Natural Science Primary 5 • Downloadable and printable © Ediciones Bilingües, S.L.