Science = Physics Revision Continued ........

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Conduction

Key Points:

Metals are the best conductors

Materials such as wool and fibreglass are good insulators

Conduction in a metal is mainly due to free electrons transferring energy inside the metal

Non-metals are poor conductors because they do not contain free electrons

Key Words:

Conduction = Transfer of energy from particle to particle in matter.

Conductor = Material/object that conducts.

Free Electron = Electron that moves about freely inside a metal and is not held inside an atom.

Insulator = Material/object that is a poor conductor.