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2.3.1a Thermal conductors and thermal insulators

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Question 23

A student places a metal spoon and a plastic spoon of the same size into a mug of boiling water. After a few minutes, the handle of the metal spoon feels much hotter than the handle of the plastic spoon. Which statement explains why the metal spoon's handle gets hot more quickly?

A

Metals are good thermal conductors, while plastics are poor thermal conductors.

B

Plastics are good thermal conductors, while metals are poor thermal conductors.

C

Shiny metal surfaces are good absorbers of infrared radiation.

D

Plastic surfaces are good emitters 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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