Spec 0625
Revise CIE IGCSE Physics 2.3.3c Rate of emission and absorption of radiation with the question bank and revision guides.
Know that for an object to be at a constant temperature it needs to transfer energy away from the object at the same rate that it receives energy • Know what happens to an object if the rate at which it receives energy is less or more than the rate at which it transfers energy away from the object • Know how the temperature of the Earth is affected by factors controlling the balance between incoming radiation and radiation emitted from the Earth’s surface • Describe how the rate of emission of radiation depends on the surface temperature and surface area of an object
