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2.2 Thermal properties and temperature

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Question 97

When railway tracks are laid, small gaps are left between adjacent steel rails.

Why are these gaps left?

A

Steel expands on warm days.

B

Steel contracts on warm days.

C

Steel expands on cold days.

D

Steel contracts on cold days, filling the gaps.

Markscheme

2.2 Thermal properties and temperature Questions

  1. IGCSE
  2. /Physics
  3. /2.2 Thermal properties and temperature

528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.

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