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Magnets & Compasses
6th Grade - Plumb
| Question | Answer |
|---|---|
| What are the four types of magnets? | ferro magnets, electro magnets, temporary magnets and permanent magnets |
| What are the three ways a magnet can become demagnetized? | hitting it too hard, dropping it, and increasing the temperature |
| Where is the magnet effects the strongest? | the ends |
| The force of attraction between two poles of a magnet | magnetic force |
| This type of magnet is difficult to magnetize, but once magnetized, it holds it. | permanent |
| Is the outer core liquid or solid? | liquid |
| These are formed when charged particles from the sun interact with oxygen and nitrogen atems in the Earth's atmosphere. | the Northern and Southern Lights |
| Any material that attracts iron or materials containing iron? | magnetic |
| The force of repulsion between two poles of magents. | magnetic force |
| What do magnetic field lines show? | the magnets coming together or pushing apart |
| A mineral containing iron | steel |
| Geographic North Pole | Magnetic South Pole |
| These poles are on the axis on which Earth rotates | North and South |
| Magnets made of iron, nickel, cobalt or alloys of those metals. | ferro magnets |
| What happens to the poles when you break a bar magnet in half? | All the pieces have north and south poles |
| Atoms group together in regions called | domains |
| Atoms group together in regions called domains which create at _______________? | strong magnetic field |
| Magnet with an iron core produced by an electric current | electro magnet |
| Aurora borealis are the _________________ | Northern Lights |
| These poles are the points on Earth's surface where its magnetic force is the strongest | magnetic poles |
| The region around a magnet in which magnetic forces act. | magnetic field |
| What are the three characteristics of all magnets? | two poles, exert forces, surrounded by a magnetic field |
| How can you magnetize a nail? | rub nail with magnet |
| Magnets that are easily magnetized, but tend to lose their magnetization easily | temporary magnets |
| Aurora lights are the _________________ | Southern Lights |
| Explain how scientists think Earth's magnetic field is created | by the swirling motion of molten lava in Earth's outer core |
| In the Northern Hemisphere, the needle on a compass always points what direction? | north |
| Why is it important to know your geopgraphical directions? | so you know your way around and can orient yourself |
Created by:
lisapaone
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