A dynamo requires 3 factors: a conducting liquid, rotation, and convection. On Earth, convection happens in the liquid outer layer of the main since the bottom of the liquid layer is considerably greater in temperature than the leading. Then, about a interval of about 100 million a long time, subduction happens on an tremendous scale, fully recycling the crust.
Walkercamidg
Walker Camidge
is a 2nd grade in Earth Sciences
from
Elk Grove Village