Question

What causes the earth’s magnetic field? A. currents in the earth’s liquid-metal outer core B. the mineral composition of the earth’s crust C. molten material in the mantle D. magnetic particles located at the earth’s poles Question Resources\

Answer 1

The magnetic field is believed to be generated by electric currents in the conductive material of its core, created by convection currents due to heat escaping from the core. So your answer is A

Answer 2

Magnetic particles located at the earth poles