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2.3 Transfer of thermal energy

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Question 32

On a cold winter day, a metal gate post A A\,A and a wooden fence post B B\,B are at the same physical temperature, which is below human body temperature.

Why does the metal post A A\,A feel much colder to the touch than the wooden post BBB?

A

AAA is a better thermal insulator than BBB.

B

AAA is a better thermal conductor than BBB.

C

AAA has a lower thermal capacity than BBB.

D

AAA is a better radiator of infrared radiation than BBB.

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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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