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10 Cards in this Set
- Front
- Back
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What is the invisible force around a magnet called? |
magnetic field |
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What does every magnet have |
north and south pole |
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What do like poles do? |
repel |
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what do opposite poles do? |
attract |
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What are magnets used in? |
compasses, fridge magnets, doors |
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How does a compass work? |
Needle always points to magnetic north pole |
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How do you use a compass? |
Place compass on flat surface and see where north points then figure out the direction you need to go |
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What are electromagnets? |
Magnets with electric current flowing through them |
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What are electromagnets used in? |
Washing machines Fire doors Windscreen wipers |
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What are the benefits of electromagnets? |
Can control strength of field Can control polarity of field can turn field on and off |
