Check your chapter knowledge with an on-line quiz.

Glencoe Earth Science : Chapter 20 - Mountain Building 1.) Why does continental crust rise higher above the surface of Earth than oceanic crust?     A.)  Oceanic crust is under continental crust.     B.)  Continental crust is less dense than the mantle.     C.)  Continental crust is thicker and is less dense.     D.)  Continental crust is thinner and less dense.