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|Sources of Heat
The sun produces heat from nuclear reactions deep inside it. All life on the earth depends on this heat.
Friction -- the rubbing of one object against another -- produces heat. Survivalists (and Boy Scouts) learn to start a fire with friction.
Chemical reactions produce heat by causing a chemical change in substances. The fire of a match is the result of a chemical reaction.
The Earth contains much heat deep inside. Some of this heat escapes to the surface when a volcano erupts.
|The Robinson Library
>> Science >> Physics >> Heat
This page was last updated on 02/02/2018.