Question

define heat.... and sources of heat.. , , inna​

Answer 1

Answer:

Heat is a form of energy which transfer from one body to another when there is a difference between temperature(from higher temperature to lower temperature).

Sun and fire is a source of heat.

Answer 2

Answer:

Temperature System

A heat source is anything that can heat up a spacecraft. Heat sources can be external (from outside the spacecraft) or internal (from inside the spacecraft). External heat sources include: the Sun. reflected sunlight from planets and moons.

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