Question 1

How does the average depth of the oceans compare to the average elevation of the continents?

Accepted Answer

A)  The oceans are hundreds of times deeper on average than the continents' average elevation.
B)  The continents stick up above sea level by about the same vertical distance that the ocean floor is below sea level.
C)  The ocean floors are about four times as deep, on average, than the average elevation of the continents above sea level.
D)  The ocean floors are higher in elevation than the continents' average distance below sea level.E) None of the above
F) All of the above

Question 2

The ocean has a three-part layered structure (surface mixed zone, transitional zone, and deep zone)at all latitudes.

Accepted Answer

A) True 
 B)False

Question 3

Manganese nodules do not accumulate in shallow water.

Accepted Answer

A) True 
 B)False

Question 4

Where does an accretionary wedge form?

Accepted Answer

A)  deep-ocean trench
B)  oceanic ridge
C)  seamount
D)  continental riseE) B) and D)
F) All of the above

Question 5

________ is the total amount of solid material dissolved in water.

Accepted Answer

The answer of ________ is the total amount of solid...

Question 6

The salts in seawater come both from the weathering of the continents and ________ by submarine volcanoes.

Accepted Answer

The answer of The salts in seawater come both from...

Question 7

Which element is most common dissolved in seawater?

Accepted Answer

A)  sodium
B)  chlorine
C)  magnesium
D)  goldE) None of the above
F) B) and C)

Question 8

Ocean covers approximately ________ percent of Earth's surface

Accepted Answer

A)  11
B)  51
C)  71
D)  91E) All of the above
F) B) and C)

Question 9

________ develop where oceanic lithosphere bends downward and sinks into the mantle.

Accepted Answer

A)  Guyots
B)  Deep-ocean trenches
C)  Submarine canyons
D)  Oceanic ridgesE) A) and C)
F) A) and D)

Question 10

Minerals that crystallize directly from seawater are examples of ________ sediment.

Accepted Answer

The answer of Minerals that crystallize directly from seawater are...

Question 11

The west coast of South America and the east coast of North America display the same kind of continental margin.

Accepted Answer

A) True 
 B)False

Question 12

A deep-sea fan at the base of a continental slope is more likely to be covered with thick turbidite layers than a mid-ocean ridge.

Accepted Answer

A) True 
 B)False

Question 13

________ is the proportion of dissolved salts to pure water.

Accepted Answer

A)  Pycnocline
B)  Salinity
C)  Density
D)  SubductionE) A) and D)
F) A) and C)

Question 14

Seamounts ________.

Accepted Answer

A)  are a special type of oceanic trench
B)  are volcanoes that form on the ocean floor
C)  form only in the Pacific Ocean basin
D)  are submarine canyons found near AustraliaE) None of the above
F) A) and D)

Question 15

What kind of seawater is densest?

Accepted Answer

A)  warm, low salinity
B)  warm, high salinity
C)  cold, low salinity
D)  cold, high salinityE) B) and C)
F) A) and D)

Question 16

Valleys that lead from the continental shelf into deeper waters are known as ________. Typically, we find ________ along the continental rise at the bottom of these valleys.

Accepted Answer

submarine ...

Question 17

How many seconds would it take an echo sounder's ping to make the trip from a ship to the Challenger Deep (10,994 meters) and back? Recall that depth = 1/2 (1500 m/sec × Echo travel time) .

Accepted Answer

A)  0) 1466 seconds
B)  1) 466 seconds
C)  14.66 seconds
D)  146.6 secondsE) A) and C)
F) A) and B)

Question 18

A prominent feature of the Mid-Atlantic Ridge is a very deep linear valley known as a(n)________.

Accepted Answer

The answer of A prominent feature of the Mid-Atlantic Ridge...

Question 19

The crests of mid-oceanic ridges ________.

Accepted Answer

A)  are heavily mantled with sediment
B)  are geologically old features
C)  contain active rift zones
D)  lie at depths exceeding 6 kilometersE) A) and B)
F) B) and D)

Question 20

Sand, silt, and clays deposited on the ocean floor are described as terrigenous sediments.

Accepted Answer

A) True 
 B)False

Exam 9: Oceans: The Last Frontier

The ocean has a three-part layered structure (surface mixed zone, transitional zone, and deep zone)at all latitudes.

Correct AnswerverifiedShow Answer

A deep-sea fan at the base of a continental slope is more likely to be covered with thick turbidite layers than a mid-ocean ridge.

Correct AnswerverifiedShow Answer

The crests of mid-oceanic ridges ________.

Correct AnswerverifiedShow Answer

What kind of seawater is densest?

Correct AnswerverifiedShow Answer

How does the average depth of the oceans compare to the average elevation of the continents?

Correct AnswerverifiedShow Answer

Where does an accretionary wedge form?

Correct AnswerverifiedShow Answer

Valleys that lead from the continental shelf into deeper waters are known as ________. Typically, we find ________ along the continental rise at the bottom of these valleys.

Correct Answerverifiedsubmarine ...View AnswerShow Answer

Seamounts ________.

Correct AnswerverifiedShow Answer

Ocean covers approximately ________ percent of Earth's surface

Correct AnswerverifiedShow Answer

________ is the proportion of dissolved salts to pure water.

Correct AnswerverifiedShow Answer

The west coast of South America and the east coast of North America display the same kind of continental margin.

Correct AnswerverifiedShow Answer

Manganese nodules do not accumulate in shallow water.

Correct AnswerverifiedShow Answer

The salts in seawater come both from the weathering of the continents and ________ by submarine volcanoes.

Correct AnswerverifiedShow Answer

Sand, silt, and clays deposited on the ocean floor are described as terrigenous sediments.

Correct AnswerverifiedShow Answer

________ develop where oceanic lithosphere bends downward and sinks into the mantle.

Correct AnswerverifiedShow Answer

A prominent feature of the Mid-Atlantic Ridge is a very deep linear valley known as a(n)________.

Correct AnswerverifiedShow Answer

Minerals that crystallize directly from seawater are examples of ________ sediment.

Correct AnswerverifiedShow Answer

Which element is most common dissolved in seawater?

Correct AnswerverifiedShow Answer

How many seconds would it take an echo sounder's ping to make the trip from a ship to the Challenger Deep (10,994 meters) and back? Recall that depth = 1/2 (1500 m/sec × Echo travel time) .

Correct AnswerverifiedShow Answer

________ is the total amount of solid material dissolved in water.

Correct AnswerverifiedShow Answer

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Valleys that lead from the continental shelf into deeper waters are known as . Typically, we find along the continental rise at the bottom of these valleys.

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submarine ...
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