It's responding to the magnetic poles of the earth.
2006-10-26 05:31:27
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answer #1
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answered by Used_to_know 3
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The compass points in the direction of Earth's Magnetic field. Since the magnetic field emits magnetic flux from the North point which in Earth's case is the North Pole, the compass points North everytime.
Think of the earth as a big magnet. Magnetic field lines come out the top (North) and magnetic field lines go into the bottom (South)
2006-10-26 12:31:54
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answer #2
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answered by Hidd3N NiN 1
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Doesn't "always." In most cases, in fact, it points some measurable degrees off true north. That's because the magnetic north pole and the real north pole are not located in the same place. In fact, the magnetic north pole drifts around a lot over the years. So new corrections have to be calculated to get true north from magnetic north.
Your compass needle is magnetic; so it aligns itself with the magnetic flux emited by the magnetic poles. Dissimilar poles (north and south) attract; similar poles (south and south, north and north) repel. So you have the south pole of the needle pointing to the magnetic north pole of the Earth.
The Earth's core includes molten iron, which, when circulating, creates the magnetic field. Because the core is liquid, it moves about as it is circulating; that's why the magnetic poles move about and we need to redo our corrections to find true north from time to time.
2006-10-26 12:59:38
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answer #3
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answered by oldprof 7
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Magnetism of North pole?
2006-10-26 12:51:08
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answer #4
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answered by RBJ 2
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this is because the earth has its own magnetic field. the north pole is actually the earth's south magnetic pole and the south pole is earth's north magnetic pole.
thus the north pole of the needle of the magnet points to north pole and vice versa
2006-10-26 14:54:18
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answer #5
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answered by Girish.J. 2
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magnetism
2006-10-26 12:31:48
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answer #6
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answered by HD 2
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