The generation of Earth's magnetic field, while not completely understood, is MOST likely influenced by
A) the flow of electrons and ions constituting an electric current in Earth's magnetosphere.
B) electric currents in Earth's electricity-conducting molten core.
C) permanent magnetism in Earth's crustal rocks and the iron core.
D) electric currents in Earth's semisolid mantle induced by the motion of the solar wind flowing around Earth.

Question

Quizplus · Accepted Answer

The Earth's magnetic field is primarily generated by electric currents in the planet's outer core, which is composed of conducting materials like iron and nickel in a molten state. This process is known as the geodynamo.

The Generation of Earth's Magnetic Field, While Not Completely Understood