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2.3 Transfer of thermal energy

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Question 21

A vacuum flask has a double-walled container with a vacuum in the space between the inner and outer walls.

How is thermal energy transferred across this vacuum space?

A

by conduction only

B

by convection only

C

by radiation only

D

by conduction and convection

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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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