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2.3 Transfer of thermal energy

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Question 222

In which of the following situations is convection the main method by which thermal energy is transferred?

A

Thermal energy travelling through a metal spoon resting in a hot mug of tea.

B

Warm air rising and circulating to heat a room when a floor heater is turned on.

C

Thermal energy from a campfire warming a person sitting a few metres to the side of the flames.

D

Energy from the Sun reaching the Earth's atmosphere through space.

Markscheme

2.3 Transfer of thermal energy Questions

  1. IGCSE
  2. /Physics
  3. /2.3 Transfer of thermal energy

301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.

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