Earth’s magnetism is related to the circulation of molten material within earth’s core.

True

Explanation:

The core of the earth consists of molten iron enriched with nickel. This molten iron is mainly responsible for the generation of earths magnetic field. The motion of convection currents creates a geodynamo that produces alternating magnetic field .

The molten core rotates because of rotation of earth on its axis due to which the magnetic poles reverses geographically.

Hence, the given statement is true.

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