Review questions for Monday, September 29

New oceanic crust forms at _________
1. divergent plate boundaries
2. convergent plate boundaries
3. transform fault boundaries
4. all of these
5. none of these
Oceanic crust is destroyed along _______
1. divergent plate boundaries
2. convergent plate boundaries
3. transform fault boundaries
4. all of these
5. none of these
Oceanic crust is neither created nor destroyed along this type of boundary.
1. divergent plate boundaries
2. convergent plate boundaries
3. transform fault boundaries
4. all of these
5. none of these
Convergent boundaries are zones where plates ____________
1. slide past each other
2. move towards each other
3. move away from each other
4. cause seafloor spreading
5. none of the above
Divergent boundaries are zones where plates _________
1. move towards each other
2. move away from each other
3. slide past each other
4. move at an angle towards each other
5. do not move at all
This type of plate boundary cannot ever have volcanoes.
1. divergent plate boundaries
2. convergent plate boundaries
3. transform fault boundaries
4. all of these
5. none of these
Transform faults always form _____ to the spreading direction
1. perpendicular
2. at an acute angle
3. at an obtuse angle
4. parallel
5. horizontal
Although transform faults offset ridge crests, sliding motion between plates only occurs:
1. parallel to the ridge crests
2. as spreading approaches a trench
3. at convergent boundaries
4. when there are deep focus earthquakes
5. between the ridge crests
This type of plate boundary has deep focus earthquakes
1. divergent plate boundaries
2. convergent plate boundaries
3. transform fault boundaries
4. all of these
5. none of these
Deep ocean trenches are associated with ________
1. rifting
2. sub-oceanic erosion
3. subduction zones
4. transform fault offsets
5. submarine extension
The Himalayan Mountains were produced along:
1. a divergent boundary
2. an ocean-ocean convergent boundary
3. a continental-continental convergent boundary
4. an oceanic-continental convergent boundary
5. a transform fault
Iceland is located along:
1. a divergent boundary
2. an ocean-ocean convergent boundary
3. a continental-continental convergent boundary
4. an oceanic-continental convergent boundary
5. a transform fault
Japan is associated with this type of plate boundary.
1. a divergent boundary
2. an ocean-ocean convergent boundary
3. a continental-continental convergent boundary
4. an oceanic-continental convergent boundary
5. a transform fault
The Mid-Atlantic Ridge is an example of:
1. divergent boundaries
2. ocean-ocean convergent boundaries
3. continental-continental convergent boundaries
4. oceanic-continental convergent boundaries
5. transform faults
San Andreas fault is an example of this type of plate boundary.
1. a divergent boundary
2. an ocean-ocean convergent boundary
3. a continental-continental convergent boundary
4. an oceanic-continental convergent boundary
5. a transform fault
Where is the San Andreas Fault?
1. The Andes mountains
2. West Tennessee
3. Washington and Oregon
4. Southern California
5. The Himalayan Mountains
The Red Sea was formed along:
1. a divergent boundary
2. an ocean-ocean convergent boundary
3. a continental-continental convergent boundary
4. an oceanic-continental convergent boundary
5. a transform fault
Volcanic island arcs are associated with:
1. divergent boundaries
2. ocean-ocean convergent boundaries
3. continental-continental convergent boundaries
4. oceanic-continental convergent boundaries
5. transform faults
Accretionary wedges (or prisms) are formed at:
1. Transform boundaries
2. Mid-ocean ridges
3. Continent-continent collision zones (e.g.Himalayas)
4. Subduction zones
5. None of the above are correct
A backarc basin can occur only at:
1. Ocean-continent convergent boundaries
2. Ocean-ocean convergent boundaries
3. Continent-continent convergent boundaries
4. All of the above types of convergent boundaries
5. Both choices "a" and "c" are correct
The Andes mountains were generated at a(n) ____________ boundary.
1. divergent
2. convergent (oceanic-oceanic)
3. convergent (continental-continental)
4. convergent (oceanic-continental)
5. transform fault
Why does the Tibetan Plateau have a high elevation?
1. transform faulting
2. seafloor spreading
3. continental rifting
4. continental collision
5. hot-spot activity
Why is the Mid-Atlantic ridge in the center of the Atlantic ocean?
1. subduction is consuming seafloor beneath both adjacent continents
2. seafloor is added to both sides during seafloor spreading
3. subduction has occurred under one and then another of the adjacent continents
4. seafloor spreading has stopped in this area
5. None of the above
Which of the following is most likely associated with a divergent plate boundary?
1. oceanic trench
2. mountain belt or island arc
3. mid-ocean ridge
4. a and b only
5. none of the above
Which of the following is most likely associated with an oceanic transform plate boundary?
1. oceanic trench
2. mountain belt or island arc
3. mid-ocean ridge
4. all of the above
5. a and b only
Mid-ocean ridges are higher than surrounding oceanic crust primarily because:
1. two plates are colliding
2. the crust is thicker
3. the crust is stronger
4. transform faulting uplifts the rocks
5. the lithosphere is thinner and hotter
The main way that new oceanic crust is created is by:
1. eruption of lavas and solidification of magmas at depth
2. sediment scraped off a subducting slab
3. continents that subside below sea level
4. continental rifting, before the continents separate
5. magmas along an ocean-continent convergent boundary
Which of the following is associated with a mid-ocean ridge?
1. an island arc
2. magma produced as the mantles rise up
3. melting of the subducting plate
4. lower topography than surrounding seafloor
5. High mountain chains like the Himalayas
A continent has an oceanic trench offshore of its coast. Which of the following is probably not present along this side of the continent?
1. a mountain belt
2. earthquakes
3. volcanoes
4. melting along a mid-ocean ridge
5. subduction of an oceanic plate
Which of the following features is associated with a deep oceanic trench?
1. mid-ocean ridge
2. linear island chain
3. seamount
4. island arc
5. All of the above
Which of the following is most likely associated with a convergent plate boundary?
1. oceanic trench
2. mountain belt or island arc
3. mid-ocean ridge
4. both a and b
5. none of the above

Review questions for Monday, September 29

Quiz