Week 2/3 quiz - Plate tectonics 1

Question 1

The Wadati-Benioff zone extends down within the mantle to a maximum depth of ________.

Answer 1

150km

Question 2

Deep-oceanic trenches are features of ________ plate boundaries.

Answer 2

convergent

Question 3

Broad, sediment-covered continental shelves are found along:

Answer 3

Passive margins

Question 4

The rate of motion of a lithospheric plate with respect to a stationary location inside the Earth is termed ________, while the motion of a plate with respect to another is termed ________.

Answer 4

absolute plate velocity; relative plate velocity

Question 5

According to the model proposed by geophysicist J. Tuzo Wilson, hot spots are caused by ________.

Answer 5

hot plumes of mantle material that rise up through cooler, denser surrounding rock

Question 6

Most of the PULLING force driving plate motion is produced ________.

Answer 6

at subduction zones

Question 7

Most of the PUSHING force driving plate motion is produced ________.

Answer 7

At mid-ocean ridges

Question 8

Continental coastlines that occur within the interior of a tectonic plate are called ________ margins.

Answer 8

Passive

Question 9

At a subduction zone, the downgoing (subducting) plate ________.

Answer 9

is always composed of oceanic lithosphere

Question 10

Which of the following is NOT true about Earth’s tectonic plates?

Answer 10

Some tectonic plates contain only continental lithosphere.

Question 11

________ is an example of a continental rift and the ________ is/are the result of collision.

Answer 11

The Basin and Range Province; Himalayan Mountains

Question 12

Slab pull occurs because subducting slabs are ________.

Answer 12

cooler, and therefore more dense, than surrounding asthenosphere