MAGNETS AND ELECTROMAGNETS

SCIENCE 8TH GRADE

magnet

any material that attracts iron and material that contains iron

magnetic pole

All magnets have these two ends where the magnetic field is strongest. These ends are called…

alike poles

repel

unlike poles

attract

magnetic field

The area of magnetic force around a magnet. The reason why magnets attract/repel without even touching

electromagnetism

relationship between electricity and magnetism

Motor

a device that converts electrical energy into mechanical energy

How can permanent magnets be destroyed or weakened?

Dropped too many times or heated too high.

Generator

A device that converts mechanical energy into electrical energy

Where is a magnetism strongest on a magnet?

at its poles

How can you make an electromagnet stronger?

increasing the number of coils, wrapping coils closer togethers, or increasing the voltage

Temporary Magnet

A magnet that can be turned on or off.

An electromagnet

A coil of wire is attached to a battery and wrapped around a piece of iron.