1. This is called the north-seeking pole of the magnet, or simply the north pole. The opposite end is called the south pole. The needle of a compass is itself a magnet, and thus the north pole of the magnet always points north, except when it is near a strong magnet.
2. Nothing, copper isn't ferromagnetic so magnets aren't attracted to it.
3. The magnet is attracted to it and pulls it to it.
4. A material they make magnets out of and/or a material that magnets are attracted too. The name ferro implies that it is a material with iron in it.
5. Electric motors are only possible because of synchronized magnets chasing each other that causes the motion of the motor.
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