Quiz 5

Question 1

A boundary in which crustal plates move past one another is called a:

Answer 1

transform fault.

Question 2

Which of these is most abundant on or in the Earth?

Answer 2

Mantle material.

Question 3

If two oceanic plates collide at a relatively fast speed, and one is much older and cooler (therefore more dense) than the other, what will NOT happen?

Answer 3

Continental mountains will form.

Question 4

The youngest seafloor rocks are found:

Answer 4

Near the rift valleys of the mid-ocean ridges.

Question 5

Geologists believe that a new ocean basin is forming:

Answer 5

at the East African Rift Valley.

Question 6

Heat is generated in the interior of the Earth primarily by radioactive decay. This heat drives plate tectonics by:

Answer 6

convection.

Question 7

The March 11, 2011 Japan earthquake was cause by:

Answer 7

Subduction of ocean crust under ocean crust.

Question 8

Which material has the greatest density?

Answer 8

Steel.

Question 9

Oceanographers believe the breakup of Pangaea occurred about:

Answer 9

210 million years ago.

Question 10

All of the following statements are true concerning subduction zones EXCEPT:

Answer 10

they are the sites with lithospheric plates are diverging or pulling apart.