Year 9 Thermal Revision

Which of the following are units of temperature?

• °C

• J

• W

• °F

Conduction is a method of heat transfer in which of the following?

• Solids

• Liquids

• Gases

• Vacuum

The water cycle uses the principle of convection. In which of the following does convection occurs?

• Solids

• Liquids

• Gases

• Vacuum

By which of the methods of heat transfer can heat be transferred in a vacuum?

• Conduction

• Convection

• Radiation

Which of the following materials are the best conductors of heat?

• Glass

• Plastic

• Rubber

• Metal

Which coloured surface is the best absorber of radiant heat?

• Glossy black

• Matt black

• Matt white

• Glossy white

Which coloured surface is the best emitter of radiant heat?

• Glossy black

• Matt black

• Matt white

• Glossy white

Why are the inside of insulated cool bags silver?

• Silver is a poor emitter of heat

• Silver is a poor absorber of heat

• Silver reflects the heat away from the bag

• Silver absorbs the heat into the bag

Why is the outside of the stove painted black?

• Black surfaces are good absorbers of heat

• Black surfaces are poor absorbers of heat

• Black surfaces are good emitters of heat

• Black surfaces are poor emitters of heat

Which of the following would be a likely temperature on a cold winters morning in Northern Ireland?

• — 20°C

• 
  — 2°C

• 2°C

• 12°C