8 How does earth create a protective magnetic field that shields earth
from harmful cosmic rays?

A magnetic field is generated from currents of the planets liquid
iron core that move around. This creates a magnetic "shield" tha
extends into space.

A magnetic field is generated by the attractive and repulisive
forces in the layers of the earth. These forces create a magnetic
"shield" that extends into space.

A magnetic field is generated from the currents of forces that ar
based in the gravitational pull and repulsive force in the
magnetic shield that extends into space.

A magnetic field is generated from the attractive and repulsive
forces in the cosmos that create a magnetic shield that extends
into space protecting earth.