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2.2 Thermal properties and temperature

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Question 2

A technician prepares an unmarked liquid-in-glass thermometer to measure temperatures between −20 ∘C-20\ ^\circ\text{C}−20 ∘C and 120 ∘C120\ ^\circ\text{C}120 ∘C.

a.

State the temperature of each of the standard fixed points used to calibrate the thermometer.

  • Upper fixed point = ........ ∘C^\circ\text{C}∘C
  • Lower fixed point = ........ ∘C^\circ\text{C}∘C
[2]
b.

Describe how the thermometer is placed to determine the position of its upper fixed point.

[2]
c.

Identify the physical property of the liquid that is used in this thermometer to indicate a change in temperature.

Select one option:

  • Change in electrical resistance
  • Thermal expansion of the liquid volume
  • Change in pressure of a constant volume of gas
  • Emission of thermal radiation
[1]
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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