Question

Which method of heat transfer carries the sun's heat through space?

a. Radiation, because medium particles participate in heat transfer
b. Radiation, because heat is transferred in the absence of a medium
c. Convection, because heat travels very fast with the speed of light waves
d. Convection, because heat is transferred through fluids by movement of particle

Answer 1

A. Radiation, because medium particles participate in heat transfer

• Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is invisible. Only a small portion comes as visible light.

Answer 2

A. Radiation, because medium particles participate in heat transfer