What can you conclude about the oceanic crust in the image?

Question

Question 10 options:

A)

It's denser than the continental crust.

B)

It's composed mostly of granitic rock.

C)

It exerts no upward force on the continental crust.

D)

It sits at a higher elevation than the continental crust.

Answer 1

Based on the typical characteristics of the oceanic crust, the most accurate conclusion is:

A) It's denser than the continental crust.

Oceanic crust is primarily composed of basalt, which is denser than the granitic rock that predominantly makes up the continental crust. Therefore, option A is correct.

Options B and D are incorrect, as oceanic crust is not composed mostly of granitic rock (that describes continental crust) and it does not sit at a higher elevation than the continental crust. Option C is also misleading since the oceanic crust does exert some upward force on the continental crust, although the overall buoyancy effects vary due to differences in density.