Terrestrial Magnetism

Terrestrial magnetism refers to the magnetic field generated by the Earth. This field acts like a giant magnet, with a north and south pole, and plays a crucial role in navigation for compasses. It results from the movement of molten iron in the Earth's outer core and influences various phenomena, such as the behavior of migratory animals and protection from solar radiation. Variations in the magnetic field can occur over time due to geological activity, leading to shifts in magnetic poles and changes in local intensity, which are studied through the field of geomagnetism.