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2.3.1a Thermal conductors and thermal insulators

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Question 20

A copper rod (a metal) and a glass rod (an insulator) are both heated at one end. Which mechanism of thermal energy transfer is primarily responsible for the much higher rate of heat conduction in the copper rod compared to the glass rod?

A

Bulk movement of atoms from the hot end to the cold end

B

Diffusion of free (delocalised) electrons

C

Vibration of the lattice structures

D

Internal emission of infrared radiation

Markscheme

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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