Life and Earth's Crust

Question 1

Which layers of the Earth are common to both the compositional and mechanical descriptions?

Revolt · Accepted Answer

inner and outer core

Question 2

Where is oceanic crust thickest?

Revolt · Accepted Answer

at mid-ocean ridges

Question 3

Ocean ridges form as a result of _______.

Revolt · Accepted Answer

the upwelling of magma from the asthenosphere

Question 4

Continental crust is younger than oceanic crust.

Revolt · Accepted Answer

F

Question 5

Oceanic crust is best described as _______.

Revolt · Accepted Answer

all of the above

Question 6

The Mohorovicic discontinuity was discovered by monitoring the speed of seismic waves through Earth.

Revolt · Accepted Answer

T

Question 7

Crust and lithosphere refer to the same layer of the Earth.

Revolt · Accepted Answer

F

Question 8

Which of the following best explains the importance of Earth’s crust to living organisms?

Revolt · Accepted Answer

The crust provides raw materials necessary for life.

Question 9

Which of the following is not true concerning the layers of the Earth?

Revolt · Accepted Answer

The layers of Earth are uniform in thickness.

Question 10

The Mohorovicic discontinuity is the _______.

Revolt · Accepted Answer

boundary where crust gives way to mantle

Life and Earth's Crust Answers