Question

what is radiation give two examples of radiation

Answer 1

radiation is the process of heat transfer which requires no medium. the sun's heat reaches us by radiation .

Answer 2

RADIATION is the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

A good example would be heating a tin can of water using a Bunsen burner. Initially the flame produces radiation which heats the tin can. The tin can then transfers heat to the water through conduction. The hot water then rises to the top, in the convection process.