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Permanent magnets - Review

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  • What is induced magnetism?
    When an unmagnetised magnetic material becomes magnetised when near a magnet.
  • What is a magnetic material?
    A material that is attracted by a magnet and can be magnetised.
  • Materials that contain iron are called ______ materials.
    ferrous
  • A compass needle is an example of what type of magnet?
    permanent magnet
  • Which type of magnetic material is easy to magnetise and easy to demagnetise?
    soft magnetic material
  • Most magnetic materials contain which element?
    iron
  • What is a permanent magnet?
    A magnet that produces its own magnetic field and does not lose magnetism easily.
  • Give TWO examples of non-magnetic materials.
    plastic, rubber wood, glass
  • Why is steel used to make permanent magnets instead of iron?
    Because steel is hard to demagnetise and retains magnetism well.
  • True or False: All magnetic materials are magnets.
    False
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