Chapter summary
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15.4 The compass
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Chapter summary
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Magnets have two poles - North and South.
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Some substances can be easily magnetised.
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Like poles repel each other and unlike poles attract each other.
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The Earth also has a magnetic field.
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A compass can be used to find the magnetic north pole and help us find our direction.
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The Earth's magnetic field protects us from being bombarded by high energy charged particles which are emitted by the Sun.
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The Aurorae are an effect of the Earth's magnetic field.
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15.4 The compass
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End of chapter exercises
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