The magnetic field of Earth
A) is related to its rotation around its axis.
B) has been almost constant throughout history.
C) is associated with magnetic poles that are at the same locations as the geographic poles.
D) is unique: It is the only planetwide magnetic field in the solar system.

Question

Quizplus · Accepted Answer

The Earth's magnetic field is indeed related to its rotation around its axis, as this rotation contributes to the dynamo effect in the Earth's outer core, which generates the magnetic field.

The Magnetic Field of Earth