Under the theory of plate tectonics,the plates themselves are
A) pieces of lithosphere at the surface of the solid Earth that move with respect to one another.
B) layers of lithosphere that are vertically stacked one atop the other.
C) composed only of continental rocks that plow through the weaker oceanic rocks.
D) very thick (approximately one-quarter of Earth's radius).

Question

Quizplus · Accepted Answer

The theory of plate tectonics states that the Earth's lithosphere, which includes the crust and upper part of the mantle, is divided into several plates that move relative to each other. These plates are not vertically stacked, but rather float and move on top of the more fluid asthenosphere. The plates can include both continental and oceanic crust, and are not necessarily very thick.

Under the Theory of Plate Tectonics,the Plates Themselves Are