Oceanography Quiz Ch. 2

Which of the following features would you find at a divergent plate boundary? a) a ridge because the two plates are being pushed-up by the hot mantle b) a ridge because two plates are colliding c) a trench because two plates are pulling apart leaving a gap d) a trench because two plates are colliding and one is subducting beneath the other

a) a ridge because the two plates are being pushed up by the hot mantle

Which of the following is an example of an oceanic-oceanic convergent plate boundary? a) aleutian islands b) east pacific rise c) mendocino fault d) red sea e) san andreas fault

a) aleutian islands

Subduction zones are ____________. a) convergent plate boundaries b) divergent plate boundaries c) transform boundaries

a) convergent plate boundaries

The San Andreas Fault ________. a) is a continental transform fault b) is an oceanic transform fault c) is associated with deep focus earthquakes d) is a divergent plate boundary e) is a convergent plate boundary

a) is a continental transform fault

Why can't continental crust be subducted? a) it is too buoyant and can't sink into the aesthenosphere b) continental crust is denser than aesthenosphere c) trick question; continental crust can be subducted

a) it is too buoyant and can't sink into the aesthenosphere

At a convergent plate boundary, two opposed plates ____________. a) move toward one another b) move away from one another c) slide past one another

a) move toward one another

Where would you expect to find the oldest ocean crust? a) near continental margins b) near hotspots c) near mid-ocean ridges d) the ocean crust is all the same age

a) near continental margins

What would happen if two oceanic plates collide? a) the older oceanic plate will subduct b) the younger oceanic plate will subduct c) a mid-ocean ridge will form d) both a and c e) both b and c

a) the older oceanic plate will subduct

Mid-ocean ridges are ____________. a) convergent plate boundaries b) divergent plate boundaries c) transform boundaries

b) divergent plate boundaries

At a divergent plate boundary, two opposed plates ____________. a) move toward one another b) move away from one another c) slide past one another

b) move away from one another

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. a) rift valley b) oceanic trench c) rifting d) seafloor spreading e) divergent plate boundary

b) oceanic trench

At a transform plate boundary, two opposed plates ____________. a) move toward one another b) move away from one another c) slide past one another

c) slide past one another

Which of the following features would you find at a convergent plate boundary? a) a ridge because the two plates are being pushed-up by the hot mantle b) a ridge because two plates are colliding c) a trench because two plates are pulling apart leaving a gap d) a trench because two plates are colliding and one is subducting beneath the other

d) a trench because two plates are colliding and one is subducting beneath the other

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. a) convergent plate boundary b) volcanic arc c) island arc d) rift valley e) continental arc

d) rift valley

How are deep-sea trenches formed? a) they are erosional features similar to the grand canyon b) they are carved by turbidity currents c) they were carved by glaciers during the last ice age d) they are formed when two plates collide and one subducts beneath the other

d) they are formed when two plates collide and one subducts beneath the other