Question

Along with the spin of the Along with the spin of the Earth, what causes its magnetic field?

the presence of magnetic rock layers in the lithosphere

the partially melted rocks of the asthenosphere

the movement of molten rock in the outer core

the use of compasses on the surface of the Earth

Answer 1

the presence of magnetic rock layers in the lithosphere

Step-by-step explanation:

Answer 2

The source of Earth's magnetic field is the molten iron and metals in the earth's core. The spinning of these liquid metals produces the same effect as electric current in a coil which produces a magnetic field.