Question

what is heat energy ?

Answer 1

Heat is a form of energy that causes the sensation of hotness or coldness.The energy transferred from one body to another when in contact due to temperature differences is called heat.Heat always transfers from a hot body to a cold body.The amount of heat depends on the amount of matter present in a body.
Heat and temperature are not same.

Answer 2

heat energy  is a form of energy that is transferred by a difference in temperature...