Question

6 what effect does the spinning of the earths core have?
a it creates gravity
b it creates matter
c it creates mass
d it creates the earths magnetic field

Explanation:

Earth's core is composed of molten, conductive iron-nickel. Its rotation, combined with convection currents, generates electric currents that produce the planet's magnetic field. Gravity comes from Earth's total mass, and matter/mass cannot be created by core rotation.

Answer:

D. It creates the earth's magnetic field