Question 1

Why aren't volcanoes associated with continent-continent convergence?

Accepted Answer

A)  Both plates are too buoyant to sink into the asthenosphere. 
B)  The continental plate isn't hot enough to cause volcanoes. 
C)  Volcanoes are not associated with convergent plate boundaries. 
D)  Rising magma from melted plates can't break through continental crust. 
E)  Volcanoes only occur on islands in the ocean and not on land.

Question 2

The Himalayas are associated with which of the following tectonic plate boundaries?

Accepted Answer

A)  Ocean-continental convergence (subduction) 
B)  Ocean-ocean convergence (subduction) 
C)  Continent-continent convergence (collision) 
D)  Divergent 
E)  Transform

Question 3

Pangaea refers to the enormous single ocean that was produced when all of the continents were assembled.

Accepted Answer

A) True 
 B)False

Question 4

The energy for plate tectonics comes from

Accepted Answer

A)  the magnetic field of the earth. 
B)  heat from the sun. 
C)  gravity between the Earth and Moon. 
D)  ocean currents. 
E)  heat from the earth's core.

Question 5

Where would you find ridge-push, a possible mechanism for driving the motion of tectonic plates?

Accepted Answer

A)  Convergent boundary 
B)  Divergent boundary 
C)  Transform fault boundary 
D)  Hotspot 
E)  Between a continent and an ocean plate

Question 6

Which of the following statements is TRUE about a mid-ocean ridge?

Accepted Answer

A)  It includes the deepest parts of the ocean basin. 
B)  It is located at a divergent boundary where tectonic plates move apart. 
C)  It is a place where old oceanic lithosphere is remelted. 
D)  It is a site of explosively erupting volcanoes. 
E)  It is a site of some of the world's largest and most devastating earthquakes.

Question 7

The characteristic type of tectonic plate motion associated with a transform plate boundary is

Accepted Answer

A)  plates move laterally past each other with horizontal motion. 
B)  plates move directly towards each other and one plate sinks deep into the mantle. 
C)  plates move directly towards each other and one plate slides beneath the other. 
D)  plates move directly away from each other.

Question 8

Reconstructing all of the continents into a single supercontinent called Pangaea helps to explain better the occurrence of the same fossil plants and animals on different continents.

Accepted Answer

A) True 
 B)False

Question 9

The boundaries of tectonic plates are defined by the location of ocean coastlines.

Accepted Answer

A) True 
 B)False

Question 10

Explain where the magma for volcanoes at divergent plate boundaries comes from and how it rises to the surface. In this explanation, briefly describe how mantle convection is related to the motion of tectonic plates.

Accepted Answer

The answer of Explain where the magma for volcanoes at...

Question 11

Explain the concept of convection. Describe how convection may work in the mantle of the earth.

Accepted Answer

The answer of Explain the concept of convection. Describe how...

Question 12

Geologists tested the model of sea floor spreading by dating rocks from the ocean floor. The model successfully predicted that ocean rocks

Accepted Answer

A)  get younger with increasing distance from a mid-ocean ridge. 
B)  get older with increasing distance from a mid-ocean ridge. 
C)  get older moving from south to north along the top of a mid-ocean ridge. 
D)  show no particular pattern of age with respect to the mid-ocean ridges.

Question 13

Which tectonic plate setting is associated with the following features: volcanic eruptions; magma rises from deep in the mantle; can produce a chain of extinct volcanoes with increasing distance from the active volcano? Yellowstone National Park and Hawaiian islands are geographic examples.

Accepted Answer

A)  divergent plate boundary 
B)  convergent plate boundary (subduction zone) 
C)  convergent plate boundary (collision zone) 
D)  transform plate boundary 
E)  hotspot

Question 14

Which of the following is TRUE about plate tectonics?

Accepted Answer

A)  Explains that continents drift around the globe, whereas the oceanic crust does not move over geologic time. 
B)  Explains that the earth's crust is split into plates that float on a completely molten mantle. 
C)  It is a controversial idea that most geologists now think is incorrect. 
D)  Explains that the earth's lithosphere is split into large pieces that move on top of a weak and hot layer called the asthenosphere.

Question 15

Convergent plate boundaries generally represent a greater hazard to people than divergent or transform plate boundaries due to the threat of major earthquakes, explosive volcanic eruptions, tsunamis, and landslides (associated with the mountain chains).

Accepted Answer

A) True 
 B)False

Question 16

In California, Los Angeles is slowly moving toward San Francisco because the two cities are located on two different tectonic plates with a transform plate boundary in between.

Accepted Answer

A) True 
 B)False

Question 17

Tectonic plates are actively separating at convergent plate boundaries and subduction zones.

Accepted Answer

A) True 
 B)False

Question 18

Explain how the seafloor is produced. Why does the Earth NOT get any bigger or smaller over geologic time?

Accepted Answer

The answer of Explain how the seafloor is produced. Why...

Question 19

Earthquakes occur at all tectonic plate boundaries EXCEPT transform plate boundaries.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following hazards would you expect to see at a divergent plate boundary?

Accepted Answer

A)  moderate strength earthquakes; non-explosive volcanic eruptions; flooding if volcanoes erupt underwater such as in Iceland 
B)  large earthquakes; explosive volcanic eruptions; landslides and flooding due to long chain of volcanic mountains 
C)  large earthquakes; no volcanoes; landslides and flooding due to the large plateau of very high mountains 
D)  large earthquakes; no volcanoes; flooding if the plate boundary is hilly

Exam 2: Internal Structure of the Earth and Plate Tectonics

Why aren't volcanoes associated with continent-continent convergence?

The Himalayas are associated with which of the following tectonic plate boundaries?

Pangaea refers to the enormous single ocean that was produced when all of the continents were assembled.

The energy for plate tectonics comes from

Where would you find ridge-push, a possible mechanism for driving the motion of tectonic plates?

Which of the following statements is TRUE about a mid-ocean ridge?

The characteristic type of tectonic plate motion associated with a transform plate boundary is

Reconstructing all of the continents into a single supercontinent called Pangaea helps to explain better the occurrence of the same fossil plants and animals on different continents.

The boundaries of tectonic plates are defined by the location of ocean coastlines.

Explain where the magma for volcanoes at divergent plate boundaries comes from and how it rises to the surface. In this explanation, briefly describe how mantle convection is related to the motion of tectonic plates.

Explain the concept of convection. Describe how convection may work in the mantle of the earth.

Geologists tested the model of sea floor spreading by dating rocks from the ocean floor. The model successfully predicted that ocean rocks

Which tectonic plate setting is associated with the following features: volcanic eruptions; magma rises from deep in the mantle; can produce a chain of extinct volcanoes with increasing distance from the active volcano? Yellowstone National Park and Hawaiian islands are geographic examples.

Which of the following is TRUE about plate tectonics?

Convergent plate boundaries generally represent a greater hazard to people than divergent or transform plate boundaries due to the threat of major earthquakes, explosive volcanic eruptions, tsunamis, and landslides (associated with the mountain chains).

In California, Los Angeles is slowly moving toward San Francisco because the two cities are located on two different tectonic plates with a transform plate boundary in between.

Tectonic plates are actively separating at convergent plate boundaries and subduction zones.

Explain how the seafloor is produced. Why does the Earth NOT get any bigger or smaller over geologic time?

Earthquakes occur at all tectonic plate boundaries EXCEPT transform plate boundaries.

Which of the following hazards would you expect to see at a divergent plate boundary?