Which description best describes heat transfer by radiation?
A) Water heated in a pot on an electric stove element.
B) Heat rising of a baseboard heater.
C) Heat from the sun.
D) All of the above.

Question

Quizplus · Accepted Answer

Heat transfer by radiation refers to energy being transmitted in the form of electromagnetic waves (i.e. light). The heat from the sun is a perfect example of radiation because it reaches the earth through the vacuum of space via electromagnetic waves. Choice A describes heat transfer by conduction (due to contact with the stove element) and choice B describes heat transfer by convection (due to the rising of hot air).

Which Description Best Describes Heat Transfer by Radiation