What is the most expansive layer of the earth?

1 Answer
Oct 13, 2016

By mass and volume, the mantle (it is the thickest). By area, the crust, because it is on the outside.

Explanation:

The mantle is the largest layer, followed by the outer core, inner core, and then the crust. From outside in, the layers are the crust, the mantle, the outer core, and the inner core.