A liquid-in-glass thermometer is constructed with a capillary tube of uniform bore, and has scale divisions that are spaced equally.
What physical property of the liquid is assumed to be constant over the thermometer's temperature range to justify equally spaced scale divisions?
State two modifications to the design of the thermometer that would increase its sensitivity (so that the spacing of the scale division marks is larger).
If the modifications in (ii) are implemented, what other modification to the thermometer is necessary to allow it to measure the same range of temperatures?
The expansion of a liquid is a physical property that can be used to measure temperature. State two other physical properties (specifying both the property and the material or device) that can be used to measure 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.