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Magnetism

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  • magnetic field
    the area around a magnet where it can push or pull
  • temporary magnet
    a magnet made from a material that easily loses its magnetism
  • what does permanent mean
    lasts for a long time or forever
  • what causes an electromagnet to work
    electric current
  • permanent magnet
    magnet designed to remain magnetized for a long time or forever
  • What is one way to make an electromagnet stronger?
    increase the source (use a larger battery)
  • attract
    pull closer together
  • magnet
    any object that can exert magnetic force
  • pole
    two regions on a magnet where magnetic forces are the strongest. There is a north pole and a south pole
  • what does temporary mean?
    only lasts a short time
  • the south end of a magnet will be attracted to
    the north end of another magnet
  • magnets are attracted to
    nickel, cobalt, iron
  • The north end of a magnet will be attracted to
    the south end of another magnet
  • Where is the strength of a bar magnet the greatest?
    at the poles
  • What would happen if you broke a bar magnet in two
    two magnets, both with a north and south pole
  • repel
    push away from each other
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