1.2.4 Review Quiz: Plate Boundary Types

New ocean crust forms at __________.

mid-ocean ridges

Which of the following are true about hot spots? (choose all that apply) A) Mantle plumes are hot enough to melt rocks, forming volcanoes in the crust above. B) The mantle plume that creates the hot spot moves around, forming chains of volcanoes. C) The mantle plume that creates the hot spot is stationary (does not move much) D) Tectonic plates move above the mantle plume, forming chains of volcanoes. E) They can be used to determine the rate of plate motion.

A, C, D, and E

Iceland is volcanically active because_____. A) it is a hot spot volcano B) the mid-Atlantic ridge cuts across the island C) it is part of a volcanic island arc

B

Are there earthquakes at divergent plate boundaries? A) Yes, small and shallow earthquakes B) No, earthquakes are not associated with spreading centers

A

What determines whether a plate will subduct at convergent plate boundaries? A) Density and age of the crust - the older/denser crust will subduct B) Density and age of the crust - the less dense, older plate will subduct C) Thickness of the crust - thicker crust will subduct D) Thickness of the crust - thinner crust will subduct

A

What plutonic igneous rock forms beneath mid-ocean ridges? A) Gabbro B) Granite C) Diorite D) Obsidian

A

Strong earthquakes commonly occur at ____. (choose all that apply) A) convergent plate boundaries B) transform plate boundaries C) hot spots D) spreading centers

A and B

If you were hiking in a mountainous area and found lots of metamorphic rocks that had been exposed to a lot of pressure, deformation and folding, which type of plate boundary would you hypothesize the rocks formed in? A) Subduction zone B) Continental convergent margin C) Divergent margin D) Near a mantle plume

B

Oceanic trenches form at _______. A) continental convergent boundaries B) subduction zones C) mid-ocean ridges D) hot spots

B

Transform boundaries are often found at ____. A) subduction zones where compression creates strong earthquakes B) mid-ocean ridges to accommodate space as the crust spreads. C) hot spot volcanoes where the tectonic plate is moving over a mantle plume. D) none of these are correct

B

Bathymetry is (choose all that apply) A) A mid-ocean ridge B) The equivalent of topography, but underwater C) A measurement of the depth to the ocean floor D) A record of the frequency of human bathing

B and C

Which type of plate boundaries are associated with volcanic arcs? (choose all that apply) A) Continental convergent boundaries B) Oceanic-continental convergence (subduction zones) C) Hot spots D) Oceanic-oceanic convergent zones

B and D

The Philippines Islands are an example of ____. A) a volcanic arc forming at an oceanic-continental subduction zone. B) volcanic islands formed over a hot spot C) a volcanic island arc forming at an oceanic-oceanic subduction zone D) mountains that formed at a continental convergent zone

C

The following are examples of ancient and active divergent boundaries on land (rifts)... A) Llano uplift and the Gulf of Mexico B) East Pacific Rise and Mid-Atlantic Ridge C) Rio Grande Rift and East African Rift D) The Appalachian Mountains and the Cascade Mountains

C

Volcanoes like Hawaii form on hot-spots. How do these volcanoes form? A) Melting of a subducting slab B) A localized heat source in the lower crust C) A "plume" of heat and mantle material rising D) Liquid core material moving to the surface

C

Where is the newest mid-ocean ridge system forming? A) The Rio Grande B) The Amazon Basin C) East Africa D) Antarctica

C

Which of these mountain ranges were formed by continent/continent collision? A) Alps and Andes B) Cascades and Appalachians C) Himalayas and Alps D) Cascades and Andes

C

Which of the following are examples of hot spot volcanoes? (choose all that apply) A) Philippines B) Alaska's Aleutian Islands C) Hawaiian islands D) Yellowstone National Park E) Cascade volcanoes in Washington & Oregon

C and D

In the movie Volcano (1997) a large earthquake along the San Andreas fault set off a volcano in Los Angeles. Which of these statements represents the geologists' response to the movie. A) Well done. It is important for Californians to understand the risks. B) This is common, but not in LA - don't worry. C) This is possible, but rare, so don't panic. D) Nonsense. Transform faults are not associated with volcanic activity.

D

Which of the following are true about divergent boundaries? A) They are mostly in the oceans. B) They are places where new crust is being created. C) They are underlain by rising magma. D) They form long ridges. E) All of these are correct

E