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Geomagnetic field

Similar term(s): Earth's magnetic field.

Definition:

The geomagnetic field is the magnetic force field that surrounds the Earth. It is attributed to the combined effects of the planetary rotation and the movement of molten iron in the Earth's' core.

Compasses, instruments that align themselves with the magnetic poles of the Earth, have been used in navigation for centuries. Some birds (particularly migratory species) and other animals rely on the geomagnetic field to orient themselves.

Source: GreenFacts

More:
Geomagnetic field

Source: United States Geological Survey (public domain)

Related words:

Magnetic field - Magnetism

Translation(s):

Español: Campo magnético terrestre
Français: Champ magnétique terrestre

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