A solar thermal storage tank contains a fluid that is heated by solar collectors during the sunny hours of the day. At night, this fluid releases its stored thermal energy to heat a building. Which thermal capacity of the fluid and which daytime temperature increase will result in the most thermal energy being stored by the fluid?
Large thermal capacity, large daytime temperature increase
Large thermal capacity, small daytime temperature increase
Small thermal capacity, large daytime temperature increase
Small thermal capacity, small daytime temperature increase
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.