Earth's magnetic poles are the points where the planet's magnetic field lines are vertical to the surface. This means that the magnetic field is strongest at the poles and weaker towards the equator. The magnetic poles also serve as reference points for navigation using a compass, as the needle will align with the magnetic field towards the magnetic poles.
Shorter
The Earth's magnetic poles are the points where the planet's magnetic field lines are vertical to the surface and serve as reference points for navigation using a compass.
