| A | B |
|---|
| Magnetism | a force of attraction or repulsion of a magnetic material due to the arrangement of the atoms |
| Magnetic poles | 2 ends where its magnetic effects are the strongest |
| attract | opposite poles (N-S) |
| repel | like poles (S-S) |
| Magnetic field | the area around a magnet where forces can act |
| Lines | are used to represent the magnetic fields |
| Natural magnets | rocks with a lot of iron in them |
| Natural Magnets | Ex. Magnetite and Lodestone |
| Temporary magnets | Are weak and only last a short time |
| Temporary Magnets | Ususally made from 'soft' pure iron |
| Perminant Magnets | Made from hard iron, which is mixed with other materials |
| Perminant magnet | Ex. Ceramic magnet |
| Ceramic Magnet | made from a form of iron called strontium ferrite |
| Magnetic Induction | the process by which the magnets are made |
| Magnetic Domain | the region of material in which the magnetic fields of individual atoms are aligned |
| Electromagnetism | the relationship between electricity anf magnetism |
| Oersted | discovered that electricity and magnetism are related. |
| electromagnetic induction | the process by ehich a current is produced by a changing magnetic field |
| electromagnet | a temporary magnet made by wrapping a current-carrying wire around an iron core |
| solenoid | a long coil of wire with many loops, carries the current |
| Electric Motor | changes electrical energy into mechanical energy |
| Electroc Motor | made up of an electromagnet (which is free to turn) and a perminant magnet |
| Galvanometers | detects small currents |
| Faraday | Was the first to publish and research that magnetism can be produced from electricity |
| Induced current | a changing of magnetic fields to produce a current |
| generator | a device that converts mechanical energy into electrical energy |
| transformer | a device in which an alturnating current in one coil of wire induces a current in the second wire. |
