Question 1

The mid-ocean mountains, such as the ridges and rises:

Accepted Answer

A)   are similar in origin to the Alps, the Rockies, and the Appalachians.
B)   are composed of folded and faulted marine sedimentary rocks.
C)   are constructed of volcanic basalt.
D)   are similar in size and features to most continental mountains.E) All of the above
F) None of the above

Question 2

The landscape of the seafloor could best be described as:

Accepted Answer

A)   a featureless plain.
B)   a smooth descent with the deepest portions farthest from land.
C)   similar in rock type, sediment thickness, and erosional processes to those found on the land.
D)   huge abyssal plains containing ridges, trenches, seamounts.E) A) and B)
F) A) and C)

Question 3

the widest continental shelf is located in:

Accepted Answer

A)   the Arctic Sea north of Siberia.
B)   the western edge of South America.
C)   the margin surrounding the Hawaiian Islands.
D)   the Emperor Seamounts.E) C) and D)
F) B) and C)

Question 4

The characteristics of deep trenches indicate:

Accepted Answer

A)   they are submerged erosional features.
B)   they are elongated depressions in the oceanic crust.
C)   they are glacial troughs dating back to the Ice Age.
D)   they are erosional canyons cut by turbidity currents.E) All of the above
F) A) and B)

Question 5

Hydrothermal vents are located near:

Accepted Answer

A)   passive continental margins.
B)   zones of rapid seafloor spreading.
C)   the edges of the deep sea trenches.
D)   the margins of the Hawaiian chain.E) A) and B)
F) All of the above

Question 6

Flat-topped seamounts that rise from the ocean floor are called:

Accepted Answer

A)   ridges.
B)   island arcs.
C)   guyots.
D)   abyssal hills.E) A) and C)
F) B) and C)

Question 7

The oldest and best-known deep-diving submarines is the:

Accepted Answer

A)   Geostat
B)   Alvin
C)   TOPEX/Poseidon
D)   ChallengerE) A) and C)
F) A) and D)

Question 8

Abyssal plains and abyssal hills cover a quarter of the Earth's surface.

Accepted Answer

A) True 
 B)False

Question 9

The great heaps of unconsolidated sediment at the base of the continental slope are known as:

Accepted Answer

A)   the continental rise.
B)   the abyssal hills.
C)   the abyssal plains.
D)   the mid-ocean mountains.E) All of the above
F) B) and C)

Question 10

The shelf break is the transition between the continental slope and the abyssal plains.

Accepted Answer

A) True 
 B)False

Question 11

Trenches and island arcs are found at spreading centers.

Accepted Answer

A) True 
 B)False

Question 12

The deepest parts of the Pacific Basin are located:

Accepted Answer

A)   in the center of the Pacific Ocean near the Hawaiian Islands.
B)   in the eastern part of the basin, off North America.
C)   in the rift valley of the East Pacific Rise.
D)   near the margins of South America, Japan, and the Marianas Islands.E) A) and B)
F) A) and C)

Question 13

Abyssal hills are small extinct volcanoes commonly associated with:

Accepted Answer

A)   seafloor spreading.
B)   convergent zones.
C)   active continental margins.
D)   continental shelves.E) None of the above
F) A) and B)

Question 14

What is a submarine canyon and how are they formed?

Accepted Answer

A submarine canyon is a canyon that cuts...

Question 15

Which of the following statements is true regarding the islands bordering deep-sea trenches?

Accepted Answer

A)   They are the result of a series of quiet, continuous basaltic eruptions.
B)   They are accumulations of sediments on the margins of the trenches.
C)   They are formed from the activities of coral and other organisms.
D)   They are explosive volcanoes and are called island arcs.E) None of the above
F) A) and D)

Question 16

The Emperor Sea Mounts are found in:

Accepted Answer

A)   the Sagasso Sea.
B)   the South Pacific.
C)   the North West Pacific.
D)   the coastal region of Australia.E) A) and B)
F) All of the above

Question 17

Which of the following statements accurately describes active continental margins?

Accepted Answer

A)   They are regions of great geological stability.
B)   They are characteristic of the margins of the Atlantic Basin.
C)   They are areas of frequent earthquakes and volcanoes, where lithospheric plates are converging or are in collision.
D)   They are areas where lithospheric plates are actively moving apart.E) B) and C)
F) B) and D)

Question 18

Water depth over continental shelves averages only about:

Accepted Answer

A)   16 meters(50 feet) 
B)   35 meters(115 feet) 
C)   75 meters (250 feet) 
D)   100 meters (300 feet) E) B) and D)
F) All of the above

Question 19

The continental shelf:

Accepted Answer

A)   is a narrow strip on the East Coast of the United States.
B)   is a steep zone dropping off to the deep seafloor like a cliff.
C)   is a featureless plain unlike the neighboring continent.
D)   is a gently sloping platform with a variable landscape.E) A) and B)
F) All of the above

Question 20

Distinguish between active and passive continental margins.

Accepted Answer

As lithospheric plates move about the pl...

Exam 4: Ocean Basins

The continental shelf:

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What is a submarine canyon and how are they formed?

Correct AnswerverifiedA submarine canyon is a canyon that cuts...View AnswerShow Answer

Flat-topped seamounts that rise from the ocean floor are called:

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The shelf break is the transition between the continental slope and the abyssal plains.

Correct AnswerverifiedShow Answer

Water depth over continental shelves averages only about:

Correct AnswerverifiedShow Answer

The great heaps of unconsolidated sediment at the base of the continental slope are known as:

Correct AnswerverifiedShow Answer

Trenches and island arcs are found at spreading centers.

Correct AnswerverifiedShow Answer

The Emperor Sea Mounts are found in:

Correct AnswerverifiedShow Answer

The mid-ocean mountains, such as the ridges and rises:

Correct AnswerverifiedShow Answer

Hydrothermal vents are located near:

Correct AnswerverifiedShow Answer

the widest continental shelf is located in:

Correct AnswerverifiedShow Answer

Which of the following statements is true regarding the islands bordering deep-sea trenches?

Correct AnswerverifiedShow Answer

The deepest parts of the Pacific Basin are located:

Correct AnswerverifiedShow Answer

The characteristics of deep trenches indicate:

Correct AnswerverifiedShow Answer

The landscape of the seafloor could best be described as:

Correct AnswerverifiedShow Answer

Abyssal hills are small extinct volcanoes commonly associated with:

Correct AnswerverifiedShow Answer

The oldest and best-known deep-diving submarines is the:

Correct AnswerverifiedShow Answer

Abyssal plains and abyssal hills cover a quarter of the Earth's surface.

Correct AnswerverifiedShow Answer

Distinguish between active and passive continental margins.

Correct AnswerverifiedAs lithospheric plates move about the pl...View AnswerShow Answer

Which of the following statements accurately describes active continental margins?

Correct AnswerverifiedShow Answer

Correct Answer
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A submarine canyon is a canyon that cuts...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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As lithospheric plates move about the pl...
View Answer

Correct Answer
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