Why is Earth's magnetic field north south?

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Offline thedoc

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Why is Earth's magnetic field north south?
« on: 03/10/2016 12:53:02 »
Tim Harvey asked the Naked Scientists:
   Is there any explanation why the magnetic field of earth is north south as opposed to east west or any other angle. The earth is a sphere but why how did the gravitational force end up being north south..
What do you think?
« Last Edit: 03/10/2016 12:53:02 by _system »

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Offline Bored chemist

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Re: Why is Earth's magnetic field north south?
« Reply #1 on: 03/10/2016 14:36:35 »
Because the Earth spins about an axis pretty much through the poles.
It could  have started either way round- Europe might have been nearer to a magnetic North pole.
And it will probably flip some time (it has many times in the past)
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