Why does Earth have a magnetic field?

Question

A. Magnets line the Equator

B. It has Nickel (Ni) and Iron (Fe) in the core.

C. It has rubber in the core.

D. It has plastic and cotton in the core.

Answer 1

The correct answer is:

B. It has Nickel (Ni) and Iron (Fe) in the core.

Earth has a magnetic field due to the motion of molten iron and nickel in its outer core, which generates electric currents. These electric currents create the Earth's magnetic field through a process known as the geodynamo.