Magnetism
Magnetism can be made by a permanent magnet, or by electricity in a wire.  This is called an electromagnet.  When magnets are put near magnetic objects, the magnet and the object are pulled toward each other.  This is called magnetic attraction.  Magnets can also repel (push away) other magnets.  Most objects that are attracted to magnets have iron in them. This is ferromagnetism. Some metals, such as aluminium, are much more weakly attracted. This is paramagnetism. A few metals are weakly repelled. This is diamagnetism.