Magnetism
The motion of electric charges creates current and generates an electromagnetic force, resulting in magnetism. Like charges, magnets consist of two opposite components.
These components, called poles, are also similar to charges in that like poles repel while opposites attract.
Each magnet has a north and south pole. Earth also has magnetic poles, though their location isn’t quite the same as the more popular geographic north and south poles.
Scientists think that Earth’s swirling, metallic core creates the planet’s magnetic field, making Earth a giant magnet.
