On a sunny day, thermal energy is transferred from the Sun to the Earth.
State the name of the process by which thermal energy is transferred from the Sun to the Earth.
A student investigates how surface color affects the absorption of thermal radiation. Two identical metal cans, containing equal masses of cold water at the same initial temperature, are placed in direct sunlight. Can A is painted matte black, and Can B is painted shiny silver. Suggest which can will reach a higher temperature after some time, and explain your answer.
An electric heater is mounted near the floor of a cold room to warm the air. Explain how the heater is able to warm all the air in the room.
301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.