Question

(b) Describe different sources of heat energy.​

Answer 1

Answer:

Most radiant heating systems operate using warm water. It is not very hard to heat water. Here are only some of your many choices for heating energy sources: natural gas, propane (LP), oil, coal, wood, electricity, heat pumps, ground source heat pumps and solar energy.

Explanation:

hope it will help you....☺️

Answer 2

1. solar (from sun).
2. mechanical (from friction created between two parts).
3. nuclear (chain reaction in nuclear reactors).
4. electrical ( heater). etc