1. Magnets
When two magnets are close, they create pushing or pulling forces on one another. These forces are strongest at the ends of the magnets. The two ends of a magnet are known as the north pole and the south pole.
If you try to put two magnets together with the same poles pointing towards one another, the magnets will repel (push away from) each other.
If you put two magnets together with different poles pointing towards one another, the magnets will attract (pull towards) each other.
Some magnets are stronger than others. Strong magnets will create bigger pushing or pulling forces than weak magnets.
2. Magnetic materials
Magnets can attract other magnets but they can also attract magnetic materials.
Magnetic materials are always metals but only a few metals are magnetic.
Iron IS magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel paperclip, for example, will be attracted to a magnet.
Most other metals, for example aluminium, copper and gold, are NOT magnetic. An aluminium drinks can, for example, will not be attracted to a magnet.
Magnets can attract other magnets but they can also attract magnetic materials.
Magnetic materials are always metals but only a few metals are magnetic.
Iron IS magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel paperclip, for example, will be attracted to a magnet.
Most other metals, for example aluminium, copper and gold, are NOT magnetic. An aluminium drinks can, for example, will not be attracted to a magnet.
3. Springs
When a spring is stretched or squashed, it creates a force in the opposite direction because the spring tries to get back to its original shape.
For example, when you squash a spring downwards on a table, you will feel a push upwards on your hand. The more you squash the spring, the bigger the pushyou will feel.
When a spring is stretched or squashed, it creates a force in the opposite direction because the spring tries to get back to its original shape.
For example, when you squash a spring downwards on a table, you will feel a push upwards on your hand. The more you squash the spring, the bigger the pushyou will feel.
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