| A | B |
|---|
| Magnetite | Mineral found in Magnesia. |
| Artificial Magnet | Created by rubbing a piece of softe iron with a piece of magnetite. |
| Electromagnet | Created by current flowing through a coil of wire. |
| Permanent magnets | Magnets that retain their magnetic properties. |
| Temporary magnets | Magnets that retain only a small portion of their magnetic properites. |
| Magnets align | In a North-South direction. |
| Ferromagnetic materials | Respond to magnetic fields. |
| Magnetic Field | Consists of flux lines. |
| Permeability | The ability of a material to accept magnetic lines of force. |
| Domain Theory | Groups of atoms arranged in the form of magnets. |
| Atomic Theory | Theory of magnetism is based on the spin of electrons as they orbit around an atom. |
| Retentivity | is teh ability of a material to retain a magnetic field. |
| Magnetic induction | The effect a magnet has on an object without physical contact. |
| Like poles | Repel |
| Unlike poles | Attract |
| Red | North Pole color code for a magnet. |
| Blue | South Pole color code for a magnet. |
| Keeper bar | Used to prevent loss of magnetism. |
| Relay | An electromechanical switch that opens and closes with an electromagnetic coil or armature. |
| Loudspeakers | Used for all types of audio amplification. |
