Magnets

From My Class Wiki

A magnet is a type of metal that either attracts or repels. When they attract, one magnet has a positive charge and one has a negetive. If they repel, they both have the same charges. Magnets are use in many ways. They can be used as MRIs, electromagnets, Maglev trains, and motors. An electromagnet is a magnet rubbed with very fast speed through a coil of wire. This gererates electricity.

(Edward June 9th, 2009)