Why is the Earth like a magnet?

Q4. Why is the Earth like a magnet?
Ans. As the Earth spins, the swirling of its iron core turns the core into a giant magnet. It is a little like the way a bicycle dynamo generates an electric current. Like smaller magnets, the earth’s magnet has two poles, a north and a south. It is because earth is magnet that ball magnets always point in the same direction if allowed to swivel freely.

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