| A | B |
|---|
| MAGLEV | Term given to a train that floats on magnets instead of wheels |
| Magnetite (or lodestone) | The name of a naturally occurring rock that has magnetic properties. |
| Magnetic poles | The two ends of a magnet (north and south) |
| Attract | What opposite poles do |
| Repel | What like poles do |
| Two separate magnets | What happens if you break a magnet in half |
| Magnetic Field | The region of magnet force around a magnet |
| Shape of a magnetic field | The magnetic field will spread out from one pole, curve around the magnet, and return to the other pole. |
| Domain definition | A very small region in which the magnetic fields of atoms are grouped together and aligned |
| Unmagnetized iron | Will have the domains pointing all over |
| Magnetized iron | Will have the domains pointing the same direction |
| Iron, Nickel and Cobalt | The three most common naturally occurring magnetic elements |
| Neodymium | A rare element (#60) that can be made into powerful magnets |
| Permanent Magnet | A magnet made of material that keeps its magnetic properties |
| Ways to destroy a magnet | 1) Heat it 2) Drop it / Strike It 3) Un-align the domains with another magnet |
| How is the earth magnetic | Because of the circulation of the molten metal (iron and nickel) in the core |
| Compass | Tool for using the earth's magnetism |
| Gauss (rhymes with mouse) | Unit for magnetic strength (G) |
| Van Allen Belts | Belts of charged particles that surround earth and are held in place byt the earth's magnetic field |
| Magnetosphere | The magnetic field around the earth. It is shaped by solar wind which pushes it away from the sun. |
| Solar wind | A stream of electrically charged particles that flowing at high speeds from the sun |
| Aurora | A glowing region (usually near the poles) of charged particles that interact with the earth's atmosphere |
| Aurora Borealis | Northern lights |
| Aurora Australis | Southern Lights |
| Changing Magnetic Field | Every million years or so, the magnetic field reverses, allowing the new ocean floor to be a an indicator of the passage of time |
| Magnet electricity connection | Moving electrons create a magnetic field |
| Electromagnet | A magnet you can turn on or off by controlling the flow of electricity (flowing = magnet on, no electricity = magnet off) |
| MRI | Magnetic Resonance Imaging - A way for doctors to look inside the human body (slice by super thin slice) |
| Three things that use magnets | Migrating birds, spawning fish, helicopter pilots |
| Neodymium and samarium | Rare metals that are very powerful magnets |
