- Magnetite is a natural magnet.
- The materials which get attracted towards a magnet are magnetic – for example, iron, nickel or cobalt. The materials which are not attracted towards a magnet are non-magnetic.
- The two ends of a bar magnet are the poles of the magnet.
- The end of the magnet that points towards North is called its North seeking end or the North Pole of the magnet. The other end that points towards the South is called South seeking end or the South Pole of the magnet. All magnets have two poles whatever their shape may be. Usually, north (N) and south (S) poles are marked on the magnets.
- A compass is usually a small box with a glass cover on it. A magnetized needle is pivoted inside the box, which can rotate freely. The compass also has a dial with directions marked on it. The compass is kept at the place where we wish to know the directions. Its needle indicates the north-south direction when it comes to rest.
- Magnets lose their properties if they are heated, hammered or dropped from some height.
- Opposite poles of two magnets attract each other whereas similar poles repel one another.
- A freely suspended magnet always aligns in N-S direction.
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