Question

3.3.2 Test (CST): Planet Earth

Question 3 of 10
Which two terms apply to continental crust rather than oceanic crust?
A. Darker in color
B. Less dense
C. Older in age
D. Thinner

Answer 1

Continental crust is composed mostly of granite making it less dense and generally older than oceanic crust, which is thinner and composed of basalt.

Step-by-step explanation:

Continental crust differs from oceanic crust in several ways, most notably in terms of density and age. The continental crust is composed predominantly of granite, which is less dense than the basalt that comprises the oceanic crust. In addition to its lower density, continental crust is also generally much older than oceanic crust. The thickness of the crust is another distinguishing factor, with continental crust being much thicker, ranging from 20 to 70 kilometers, compared to the approximate thickness of oceanic crust at only about 6 kilometers.