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2.3 Transfer of thermal energy

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Question 223

Which statement about the transfer of thermal energy is correct?

A

Air is a good conductor of thermal energy, which is why trapped air is used in double-glazed windows.

B

Convection currents can form in solids, liquids, and gases.

C

In a vacuum, thermal energy is transferred solely by radiation.

D

Thermal radiation requires a material medium to transfer energy.

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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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