Question

What is a geodynamo?

A. The Earth's rotation and convection forces cause the liquid outer iron core to move creating a magnetic field.

B. The gravity of the Moon and Sun pulling against the Earth create a strong tidal magnetic field.
C. The circulation of the liquid core back through the mantle produces a powerful magnetic field.
D. The force created by the Earth's north and south magnetic poles.

Answer 1

The answer is A.

Step-by-step explanation:

I took the test and got this correct.

The Earth's rotation and convection forces cause the liquid outer iron core to move creating a magnetic field.

Answer 2

Answer:
A

Step-by-step explanation:
The geodynamo is the mechanism that creates our planet's magnetic field, maintains it, and causes it to reverse.