A magnetic pole is one of two points on a magnet where its magnetic force is strongest. Every magnet has a north pole and a south pole, and these poles behave in a specific way: opposite poles attract each other (north and south pull together), while matching poles repel each other (north pushes away from north, south pushes away from south).

You can see magnetic poles in action with a simple bar magnet and iron filings. Sprinkle the filings near the magnet and they'll cluster most densely at the two ends: those are the poles. The filings arrange themselves in curves between the poles, showing invisible lines of magnetic force.

Earth itself acts like a giant magnet with magnetic poles near (but not exactly at) the North and South Poles. A compass needle is a small magnet that spins freely, and its north pole points toward Earth's magnetic north pole. This is how compasses help people navigate.

Here's something surprising: Earth's magnetic poles slowly wander over time, moving several miles each year. Scientists track these shifts carefully because so many navigation systems depend on knowing where the magnetic poles are located. The magnetic poles have even completely flipped many times throughout Earth's history, with north becoming south and south becoming north, though this happens over thousands of years.