Unit 33 | Higher Education | Oxford University Press Canada

Question 1:

Temperatures of oceanic crust are highest near:
a) midoceanic ridges
b) continental margins
c) tropical latitudes
d) continental shelves
e) the Southern Hemisphere

Question 2:

An 'exotic' rock mass among a region of consistent rocks is known as a(n):
a) ridge
b) mineral
c) suspect terrane
d) artificial terrane
e) conglomerate

Question 3:

The condition of equilibrium between landmasses and the asthenosphere is:
a) continental drift
b) isostasy
c) uplift
d) crustal spreading
e) rebound

Question 4:

When erosion first begins and the sialic root is deep, isostatic adjustment occurs:
a) very slowly
b) in sporadic bursts with gaps of inactivity in between
c) not at all
d) only if the landmass is a volcano
e) almost continuously

Question 5:

Isostatic rebound after the rapid retreat of glaciers occurs:
a) very rapidly
b) in abrupt phases
c) slowly
d) not at all
e) too quickly for equilibrium to exist

Question 6:

In a comparison of sial and sima, which substance would 'float'?
a) sial
b) sima
c) neither would float
d) both would float
e) sial would float only in Arctic latitudes

Question 7:

Crust of ocean floors drops in temperature as it reaches continental margins.
a) True
b) False

Question 8:

Wrangellia, in North America, is an example of a suspect terrane.
a) True
b) False

Question 9:

Isostasy is a condition of disequilibrium.
a) True
b) False

Question 10:

As erosion occurs, isostatic uplift compensates for it.
a) True
b) False

Question 11:

The weight of water behind a dam can stimulate isostatic uplift.
a) True
b) False

Question 12:

The Earth's crust is permanent, unchanging, and solid.
a) True
b) False