How it works
A compass points north because both magnets have two poles, one north pole and one south pole, and one magnet's north pole is attracted to another magnet's south pole. (You might have seen this demonstrated by a pair of basic bar magnets or refrigerator magnets moved to the end.)
The Earth is a magnet which can communicate with other magnets in this way, and a compass magnet's north end is drawn to align with the Earth's magnetic field. Since the Earth's magnetic north pole attracts the "north" ends of other magnets, our plane's "south pole" is actually the
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