Magnetic pole

A magnetic pole is caused when the domains in a substance are aligned. A magnet always has two poles, a north and a south. If you were to cut a magnet in half, you would never get a north piece of magnet and a south piece of magnet. You would instead end up with two smaller magnets.

The Earth's magnetic field has a north and south pole. We can use the magnetic field of the Earth to help navigate by using a compas. Compasses can also be used to figure out which side of a magnet is the north or south pole of that magnet.