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2.3.1a Thermal conductors and thermal insulators

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Question 55

Which of the following describes the main reason why metals are much better conductors of thermal energy than non-metals?

A

Convective currents of fluid ions transfer heat within the solid.

B

Free (delocalized) electrons rapidly transfer kinetic energy through the metal lattice.

C

The atomic nuclei in metals have a lower mass, allowing them to vibrate more easily.

D

Radiation from the surface of metals transfers thermal energy without physical contact.

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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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