The likely source of the Earth's magnetism is:
A) the flow of liquid metals in the outer core.
B) a permanent magnet within the Earth's core.
C) the Sun.
D) convection currents in the mantle.

Question

Quizplus · Accepted Answer

The flow of liquid metals in the outer core is believed to generate the Earth's magnetic field through a process called dynamo action. The Earth's outer core is composed primarily of liquid iron and nickel, which are good conductors of electricity. The movement of these electrically conductive fluids generates electrical currents, which in turn generate magnetic fields. This process is responsible for creating the Earth's magnetic field, which protects us from the harmful effects of solar radiation and cosmic rays.

The Likely Source of the Earth's Magnetism Is