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2.3.1a Thermal conductors and thermal insulators

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Question 48

Which statement about thermal energy transfer processes is correct?

A

Thermal energy transfer by radiation requires a material medium to propagate.

B

In convection, hotter parts of a fluid sink because they become more dense.

C

Metals are good thermal conductors because their free electrons can rapidly transfer energy.

D

Conduction is the main mechanism of heat transfer through gases.

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2.3.1a Thermal conductors and thermal insulators Questions

  1. IGCSE
  2. /Physics
  3. /2.3.1a Thermal conductors and thermal insulators

67 exam-style questions on CIE IGCSE Physics 2.3.1a Thermal conductors and thermal insulators. Each one has a worked solution and a mark scheme showing where the marks go.

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