# Magnetism

Mind Map by , created over 6 years ago

## Other Physics Mind Map on Magnetism, created by anna2528 on 04/19/2013.

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 Created by anna2528 over 6 years ago
GCSE AQA Physics - Unit 3
GCSE AQA Physics 1 Energy & Efficiency
Waves
Computing Hardware - CPU and Memory
Specific topic 7.7 Timber (tools/equipment/processes)
Eclipses
Refraction
Forces and motion
AQA Physics P1 Quiz
Using GoConqr to study science
Magnetism
1 Poles
1.1 All magnets have north and south poles
1.2 Opposite poles attract and like poles repel

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2 Changing Magnets
2.1 Breaking
2.1.1 Breaking a magnet makes two magnets. They will both have a north and south pole but they will just be weaker than when they were together

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2.1.1.1 This will keep on happening every time you break it.
2.2 Magnetic Materials
2.2.1 When a magnetic material is close to a magnet it becomes a magnet itself. This means a magnet can turn a magnetic item any way round.

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• In the link below, the paperclips have turned into a magnet. If the magnet's side facing the paperclips were north, the paperclips will automatically turn to south. https://www.google.co.uk/search?safe=off&amp;hl=en&amp;q=magnetic+material+into+a+magnet&amp;bav=on.2,or.r_cp.r_qf.&amp;bvm=bv.45512109,d.d2k&amp;biw=1366&amp;bih=643&amp;wrapid=tlif136644489505710&amp;um=1&amp;ie=UTF-8&amp;tbm=isch&amp;source=og&amp;sa=N&amp;tab=wi&amp;ei=bUtyUbamLI-X0QWF-4CwBg#um=1&amp;safe=off&amp;hl=en&amp;tbm=isch&amp;q=paper+clip+and+magnet&amp;spell=1&amp;sa=X&amp;ei=m0tyUcGJOOaW0QXGq4D4DA&amp;ved=0CFAQBSgA&amp;bav=on.2,or.r_cp.r_qf.&amp;bvm=bv.45512109,d.d2k&amp;fp=f0fe323487b2251a&amp;biw=1366&amp;bih=643&amp;imgrc=Q6btwRFv9uVI7M%3A%3B3Z4St_wxA2ExeM%3Bhttp%253A%252F%252Fcontent.mycutegraphics.com%252Fgraphics%252Fscience%252Fmagnet-paper-clips.png%3Bhttp%253A%252F%252Fwww.mycutegraphics.com%252Fgraphics%252Fscience%252Fmagnet-with-paper-clips.html%3B450%3B421
2.2.1.1 This means it has an 'Induced Magnetism'

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• http://www.le.ac.uk/se/centres/sci/selfstudy/mam6.htm Explains Induced Magnetism
3 Types of Metal Found In Magnets
3.1 Soft Magnetic Materials
3.1.1 Pure iron is a soft magnetic material
3.1.1.1 It is easy to magnetise but loses its magnetism easily
3.1.1.2 Iron is used in a electric bell. This is so when it hits the hammer, it looses its magnetism instantly as it is not connected to the magnet.
3.1.1.2.1 When it reconnects it regains its magnetism. This process creates the ringing noise.
3.2 Hard Magnetic Materials
3.2.1 Steel is an example of a hard magnetic material
3.2.1.1 It is harder than iron to magnetise but it keeps its magnetism much longer.
4 Magnetic Fields
4.1 Magnetic fields are in the shape of an 8 around a magnet with lines coming out of the middles

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