Question

Two types of crust and characteristics; which is thicker/thinner, more/less dense, older/younger:

A. Continental crust is thicker, less dense, and younger. Oceanic crust is thinner, more dense, and older.
B. Continental crust is thinner, more dense, and younger. Oceanic crust is thicker, less dense, and older.
C. Continental crust is thicker, more dense, and older. Oceanic crust is thinner, less dense, and younger.
D. Continental crust is thinner, less dense, and older. Oceanic crust is thicker, more dense, and younger.

Answer 1

The correct answer is A. Continental crust is thicker, less dense, and younger. Oceanic crust is thinner, more dense, and older.

Step-by-step explanation:

The correct answer is A. Continental crust is thicker, less dense, and younger. Oceanic crust is thinner, more dense, and older.

Continental crust is made up of many different types of igneous, metamorphic, and sedimentary rocks, with the average composition being granite, which is much less dense than the mafic rocks of the oceanic crust. Oceanic crust, on the other hand, is typically about 6 kilometers thick and composed of volcanic rocks called basalt, which are denser than the rocks of the continental crust.

In addition, because of the process of subduction, oceanic crust is continuously being formed and destroyed, making it older than the continental crust.