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2.3 Transfer of thermal energy

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Question 191

In which situation is convection the main method by which energy is transferred?

A

A metal spoon becoming hot when placed in a bowl of warm broth.

B

Warm air rising from a room radiator to heat up the entire room.

C

Infrared radiation from a grill cooking a piece of meat from above.

D

Direct transfer of warmth to a person's hands when holding a heated gel pack.

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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