Question 1

Which of the following is an island arc?

Accepted Answer

A)   Hawaiian Islands
B)   Iceland
C)   the East African Rift
D)   Aleutian Islands
E)   none of theseF) C) and E)
G) B) and E)

Question 2

This map shows plate boundaries in the Caribbean region. Which number is in the Gulf of Mexico?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) C) and D)
G) B) and C)

Question 3

Which of these numbered features is over continental crust that has been the most thinned by rifting?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   none of theseF) D) and E)
G) A) and B)

Question 4

The red dots that coincide with volcanically active island chains shown on the map are called:

Accepted Answer

A)   hot spots
B)   mid-ocean ridges
C)   abyssal plains
D)   island arcsE) C) and D)
F) A) and B)

Question 5

Which creatures belong to the community of organisms that live at hydrothermal vents?

Accepted Answer

A)   Giant clams
B)   Red worm tubes
C)   White crabs
D)   All of these creatures belong to the community of organisms that live at hydrothermal vents.E) B) and D)
F) All of the above

Question 6

What is a popular model for the formation of an atoll?

Accepted Answer

A)   a moderate-sized meteoroid forms a circular crater on the seafloor
B)   a volcanic eruption forms a large circular caldera
C)   a volcanic island forms and subsides
D)   a barrier reef becomes buried by volcanic eruptionsE) A) and B)
F) B) and D)

Question 7

The Sea of Japan formed as a deep basin between Asia and Japan because:

Accepted Answer

A)   of back-arc seafloor spreading
B)   of trench subduction
C)   it is part of a continental platformD) B) and C)
E) A) and C)

Question 8

Most oceanic plateaus are:

Accepted Answer

A)   small pieces rifted apart from continents
B)   places where the seafloor has been buckled upward by convergence
C)   constructed by volcanic eruptions probably over mantle plumes
D)   large fan-shaped mounds deposited by turbidity currentsE) A) and B)
F) B) and D)

Question 9

If you wanted to locate hot spots on Earth, which of the following would NOT be good place to look?

Accepted Answer

A)   the volcanically active end of a linear island chain
B)   clusters of volcanically active islands
C)   Hawaii and the Galapagos
D)   all of these would be good placesE) None of the above
F) B) and C)

Question 10

Which of the following is the presently occurring near the Sea of Japan?

Accepted Answer

A)   oceanic crust in the sea of Japan is being generated by back-arc spreading
B)   Japan is moving closer to Asia over time
C)   Volcanoes in Japan are related to subduction of oceanic crust that forms in the Sea of Japan
D)   all of theseE) A) and C)
F) A) and B)

Question 11

Based on the features of the ocean floor in this figure, which cross section is the most appropriate match?

Accepted Answer

A)   cross section A
B)   cross section B
C)   cross section C
D)   cross section DE) A) and B)
F) B) and C)

Question 12

This map shows plate boundaries in the Caribbean region. Which number is closest to a subduction zone that has formed an island arc?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) A) and B)
G) C) and D)

Question 13

Island arcs form in association with what type of tectonic setting?

Accepted Answer

A)   ocean-ocean convergent
B)   ocean-continent convergent
C)   transform
D)   continental riftE) All of the above
F) A) and C)

Question 14

Which of the following are associated with turbidity currents?

Accepted Answer

A)   a dense slurry of water and sediment that moves downhill
B)   submarine canyons
C)   submarine fans
D)   graded beds
E)   all of theseF) B) and E)
G) D) and E)

Question 15

Which conditions promote the growth of coral reefs?

Accepted Answer

A)   shallow water
B)   warm water
C)   clear water
D)   all of these conditions promote the growth of coral reefsE) A) and B)
F) None of the above

Question 16

Which of the numbered features on this figure is a continental slope?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) All of the above
F) A) and D)

Question 17

Salt is less dense and weaker than other types of rocks so it flows upward to form:

Accepted Answer

A)   domes
B)   folds
C)   basins
D)   faultsE) B) and D)
F) None of the above

Question 18

Salt is a weak rock that can flow and therefore it forms:

Accepted Answer

A)   domes
B)   slip plane fold thrust faults
C)   salt glaciers
D)   all of theseE) B) and C)
F) C) and D)

Question 19

Which of the following seas was formed by rifting or seafloor spreading?

Accepted Answer

A)   North Sea
B)   Red Sea
C)   Persian Gulf
D)   Baltic SeaE) C) and D)
F) A) and D)

Question 20

What processes can occur in front of or behind some island arcs?

Accepted Answer

A)   trench rollback or back-arc rifting
B)   fold and thrust belts in the mountains, and formation of a continental plateau
C)   formation of an oceanic plateau related to subduction
D)   all of theseE) B) and D)
F) C) and D)

Exam 10: Seafloor and Continental Margins

Most oceanic plateaus are:

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Which of the following is an island arc?

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Salt is a weak rock that can flow and therefore it forms:

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What is a popular model for the formation of an atoll?

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Which of the following is the presently occurring near the Sea of Japan?

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If you wanted to locate hot spots on Earth, which of the following would NOT be good place to look?

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Which conditions promote the growth of coral reefs?

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Which creatures belong to the community of organisms that live at hydrothermal vents?

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Which of these numbered features is over continental crust that has been the most thinned by rifting?

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This map shows plate boundaries in the Caribbean region. Which number is in the Gulf of Mexico?

Correct AnswerverifiedShow Answer

What processes can occur in front of or behind some island arcs?

Correct AnswerverifiedShow Answer

Which of the following seas was formed by rifting or seafloor spreading?

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Island arcs form in association with what type of tectonic setting?

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The red dots that coincide with volcanically active island chains shown on the map are called:

Correct AnswerverifiedShow Answer

Which of the numbered features on this figure is a continental slope?

Correct AnswerverifiedShow Answer

Based on the features of the ocean floor in this figure, which cross section is the most appropriate match?

Correct AnswerverifiedShow Answer

This map shows plate boundaries in the Caribbean region. Which number is closest to a subduction zone that has formed an island arc?

Correct AnswerverifiedShow Answer

Salt is less dense and weaker than other types of rocks so it flows upward to form:

Correct AnswerverifiedShow Answer

The Sea of Japan formed as a deep basin between Asia and Japan because:

Correct AnswerverifiedShow Answer

Which of the following are associated with turbidity currents?

Correct AnswerverifiedShow Answer

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