Magnetism Mindmap

A mindmap of the Core magnet knowledge for Common entrance and Shcholarship at 13+

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  • Magnetism Chapter 22
    • Magnetic materials
      • Nickel
      • Iron
      • Cobalt
    • Attraction
      • Like poles attract N+S
    • Repulsion
      • Like poles repulse each other N-N repulses
        • Like poles attract N+S
      • Attraction
      • Test for a magnet
        • The only true test of a magnet is to repel it with another magnet.
          • Like poles repulse each other N-N repulses
            • Repulsion
          • Types of magnet
            • They are Bar, Horse show, circle/spherical, electromagnet.
          • Theory of making a magnet
            • All methods of making a magnet work in the same way. They are trying to align the atoms in a magnetic material so that they are facing the same way. Before magnetised, atoms are in a random alignment. Once magnetized all atoms face the same way.
          • How to make a magnet
            • Theory of making a magnet
              • All methods of making a magnet work in the same way. They are trying to align the atoms in a magnetic material so that they are facing the same way. Before magnetised, atoms are in a random alignment. Once magnetized all atoms face the same way.
            • Stroke a magnetic material with a pre-made magnet for a while in the same direction. Hit the magnetic material with a hammer inside a strong magnetic field. Put the magnetic material inside a very strong magnetic field.
          • Core knowledge
            • The shape of a magnetic field around a bar magnet Attract/repulsion Repelling only true test for a magnet Iron/Steel/Nickel/Cobalt magnetic materials Permanent and non-permanent magnets- electro magnets can be switch on and off. Compasses around a magnet North and South poles How to make a temporary magnet Magnetism works through things
          • Field Lines
            • We can see the field lines around a magnet using iron filings. Field lines always go from north to south poles. The poles are the strongest points of the magnets.

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