What Is a Magnetic Field?
5. Our Planet
At the center of our planet is a solid core of iron and nickel. Surrounding this is a hot, molten area of iron and nickel that is constantly swirling around the solid core. This movement of the electrons in the molten core rotating around the solid core results in an electrical charge, and this causes the core to become a giant magnet.
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As with other magnets, the magnet at the center of our planet will generate a magnetic field. This magnetic field is so large that it can be experienced on the surface of our planet. It also produces a north pole and a south pole.
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