Earth's Magnetic Field
Did you know that the poles of the Earth function like the ends of a magnet?
That's right! You can think of the centre of the Earth as a place that contains a massive bar magnet. This giant magnet is why the Earth has magnetic north and south poles. And like all magnets, the Earth too has a magnetic field—a region around itself where the effects of its magnetism can be felt.
What's fascinating is that from time to time, during the history of our planet, the north and south poles of Earth's magnetic fields have swapped places! That means, the north pole became the south and the south pole became the north. And this reversal of magnetic poles is happening again now.
Why? And how?! The video below has some explanations!
Video courtesy: Life Noggin
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