| A | B |
|---|
| magnet | a rock or piece of steel or iron that attracts iron or steel |
| attract | to pull |
| pole | the end of a magnet where the pull is the strongest |
| repel | to push away from |
| magnetic field | the area around a magnet where its force pulls |
| compass | a tool with a magnetic needle that always points to Earth's magnetic North Pole |
| force | a push or a pull that makes something move or change direction |
| matter | anything that takes up space and has mass |
| electromagnet | When an electric current is passed through a coil of wire wrapped around a metal core, a very strong magnetic field is produced. |
| electric motor | a device which changes electrical energy into mechanical energy. |
| DC Current | is electrical current which comes from a battery which supplies a constant flow of electricity in one direction. |
| AC Current | is electrical current which comes from a generator. As the electromagnet is rotated in the permanent magnet the direction of the current alternates once for every revolution |
| Domains | Magnetic substances like iron, cobalt, and nickel are composed of small areas where the groups of atoms are aligned like the poles of a magnet. |
| Galvanometer | an electromagnet that interacts with a permanent magnet |
