Why does Earth have magnetic poles?

[admin]

Earth is the only rocky body in the inner solar system with strong magnetic poles. But where do these poles come from, and what do they do?

Why does Earth have magnetic poles? : Read more

 

[Wizards]

Strange they describe the earth as a dynamo with without mentioning that a dynamo creates electricity, inner core(armature) and an outer core (field windings) the electricity creates the magnetic fields ...