Question

True or false: oceanic crust is denser then continental crust because it is comprised of silica.

Answer 1

Yes oceanic crust is denser than continental

Answer 2

Because continental crust is less dense than oceanic crust it floats higher on the mantle, just like a piece of Styrofoam floats higher on water than a piece of wood does. The mantle, oceanic crust and continental crust have different densities because they are made of different kinds of rock with different densities. TRUE