8i Heating And Cooling Multiple Choice Test

Chapter 3

Multiple choice test

Chapter

3 Energy and fuels

SoW ref

8l Heating and cooling

Name

Class

Teacher

There is only one correct answer to each question. Tick () the box next to the answer that you think is right. 1

Which answer shows the correct units for energy and temperature? Energy units

Temperature

A

degrees Celsius

joules

B

joules

degrees Celsius

C

joules

watts

D

watts

degrees Celsius

A 2

B

C

D

Which answer shows the correct temperatures? Room temp.

Body temp.

Iced water

Boiling water

A

0 °C

100 °C

0 °C

20 °C

B

20 °C

37 °C

0 °C

100 °C

C

37 °C

20 °C

20 °C

100 °C

D

100 °C

20 °C

0 °C

37 °C

A

B

C

D

3

When a hammer is picked up by the head (metal end) it feels cold. This is because A metals are colder than other materials B metals are good conductors and take heat energy from the hand C metals react with the skin to feel cold D everything you touch feels cold

4

At a burger bar a metal rod is used to test the temperature inside cooked food. (The food is then thrown away). What is the proper name for this metal rod? A alcohol thermometer B bi-metallic strip C pH meter D temperature probe

Hodder Science Assessment Pack © 2003 Hodder & Stoughton Educational

Chapter 3

Multiple choice test

5

Which answer best explains what happens to particles as their temperature rises? A they break up B they decompose C they fuse together D they move faster

6

When solids are heated they can expand slightly. This is because A the gaps between the particles gets bigger B more particles are made by the energy C the particles swell up as they absorb energy D the particles vibrate more and move apart

Questions 7–9 refer to the drawing of the house below.

7

Which energy saving improvement prevents heat loss by convection? A cavity wall insulation B double glazing C draught excluders D porch

8

Which two energy saving improvements prevent heat loss by conduction? A double glazing and porch B draught excluders and double glazing C draught excluders and porch D loft insulation and cavity wall insulation

9

Which answer best describes how cavity wall insulation works? A it acts like a blanket and keeps the house warm B it contains pockets of trapped air that are poor conductors C it reflects back heat radiation D it stops warm air escaping between the bricks

Hodder Science Assessment Pack © 2003 Hodder & Stoughton Educational

Chapter 3

Multiple choice test

10 Which graph represents a pure liquid turning into a solid as it cools? A B

C

D

11 Which answer describes how these energy transfer methods work?

A

Conduction energy passed to next particle

Convection fluid becomes less dense when heated energy passed to next particle

B

electromagnetic waves

C

energy passed to next particle

electromagnetic waves

D

electromagnetic waves

fluid becomes less dense when heated

A

B

C

D

12 How does the heat of the sun reach the earth’s atmosphere? A by conduction, convection and radiation B by convection and radiation C by conduction and convection D by radiation only

Hodder Science Assessment Pack © 2003 Hodder & Stoughton Educational

Radiation electromagnetic waves fluid becomes less dense when heated fluid becomes less dense when heated energy passed to next particle