Magnetic fields
2 marks · EasyDescribe the differences between permanent magnets and temporary magnets.
What is a permanent magnet?
What is a temporary magnet?
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(a) A permanent magnet is made of a material that keeps its magnetism for a long time.
(b) A temporary magnet is a material that loses its magnetism easily after the magnetising force is removed.
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Marking points
B1 (a) · 1 mark · Gives correct definition of permanent magnet.
B1 (b) · 1 mark · Gives correct definition of temporary magnet.
Worked solution
Permanent magnet: A material that retains its magnetism for a long time (e.g. steel). Temporary magnet: A material that quickly loses its magnetism when the magnetising force is removed (e.g. iron).