A solar water heater contains a storage tank filled with a thermal storage medium. During the day, the medium is heated by solar energy. At night, this stored thermal energy is released to heat a building.
Which thermal capacity of the storage medium and which daytime temperature rise will result in the most thermal energy being stored?
Large thermal capacity, large daytime temperature rise
Large thermal capacity, small daytime temperature rise
Small thermal capacity, large daytime temperature rise
Small thermal capacity, small daytime temperature rise
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.