Question 1

Valleys that lead from the continental shelf into deeper waters are known as ________.

Accepted Answer

The answer of Valleys that lead from the continental shelf...

Question 2

Which one of the following concerning mid-ocean ridges is false?

Accepted Answer

A)   They are sites for submarine eruptions of basaltic lava.
B)   They are where young lithosphere is added to the edges of spreading, oceanic plates.
C)   Terrigenous sediment coverings are very thin or absent.
D)   Sediments include thick siliceous ooze deposits and sandy turbidite beds.

Question 3

The continental rise is located ________.

Accepted Answer

A)   at the top of a mid-ocean ridge
B)   at the top of the continental slope
C)   between an abyssal plain and continental slope
D)   at the seaward edge of a deep ocean trench

Question 4

The BEST definition of the outer edge of the continental shelf is that point where ________.

Accepted Answer

A)   the gradient becomes very gentle
B)   the water depth reaches 100 fathoms
C)   it meets an oceanic ridge
D)   a rapid steepening of the gradient occurs

Question 5

Submerged, flat-topped seamounts are known as guyots.

Accepted Answer

A) True 
 B)False

Question 6

Sediments derived primarily from the products of weathering on the continents are called ________.

Accepted Answer

A)   terrigenous sediment
B)   biogenous sediment
C)   hydrogenous sediment
D)   both terrigenous and biogenous sediment

Question 7

Which one of the following would most likely be covered with thick turbidite layers?

Accepted Answer

A)   axial rift zone of an active mid-ocean spreading center
B)   upper part of a steep, narrow, submarine canyon
C)   deep-sea fan at the base of a continental slope
D)   ocean floor around a conical-shaped seamount

Question 8

Matching. Match the ocean floor sediment with each phrase.
-quartz sand

Accepted Answer

A)  biogenous
B)  terrigenous
C)  hydrogenous

Question 9

The Atlantic and Pacific basins have oceanic ridges; the Indian Ocean has no oceanic ridge.

Accepted Answer

A) True 
 B)False

Question 10

Label the different features of the passive continental margin on the diagram below.

Accepted Answer

The answer of Label the different features of the passive...

Question 11

Flat-topped volcanic structures located on the floor of the deep ocean basin are termed ________.

Accepted Answer

The answer of Flat-topped volcanic structures located on the floor...

Question 12

Minerals that crystallize directly from seawater are examples of ________.

Accepted Answer

A)   terrigenous sediment
B)   biogenous sediment
C)   hydrogenous sediment
D)   both terrigenous and biogenous sediment

Question 13

Discuss the distribution of seafloor sediments in the ocean basins. What are the different types of sediments, and what are the factors that control their distribution (geologic setting, climate, etc.)?

Accepted Answer

The answer of Discuss the distribution of seafloor sediments in...

Question 14

It is thought that submarine canyons on the continental slope have been generated by ________.

Accepted Answer

A)   streams when sea level was much lower than it is today
B)   streams when sea level was much higher than it is today
C)   a submarine glaciation
D)   turbidity currents

Question 15

Which one of the following is NOT part of the continental margin?

Accepted Answer

A)   continental shelf
B)   continental slope
C)   continental rise
D)   continental trench

Question 16

Abyssal plains with sediments covering the seafloor igneous rocks are more extensive in the central Pacific basin than in the North Atlantic.

Accepted Answer

A) True 
 B)False

Question 17

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Accepted Answer

A)   rift valley 
B)   subduction 
C)   volcanic island arc 
D)   trench

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

"Black smokers" are associated with ________.

Accepted Answer

A)   oceanic ridges
B)   mineral-rich waters
C)   hot water
D)   all of these

Question 20

The gently sloping submerged surface extending from the shoreline toward the deep ocean is termed the ________.

Accepted Answer

A)   continental shelf
B)   continental slope
C)   continental rise
D)   submarine canyon

Exam 13: The Ocean Floor

Submerged, flat-topped seamounts are known as guyots.

Correct AnswerverifiedShow Answer

Minerals that crystallize directly from seawater are examples of ________.

Correct AnswerverifiedShow Answer

It is thought that submarine canyons on the continental slope have been generated by ________.

Correct AnswerverifiedShow Answer

The continental rise is located ________.

Correct AnswerverifiedShow Answer

Matching. Match the ocean floor sediment with each phrase. -quartz sand

Correct AnswerverifiedShow Answer

Which one of the following is NOT part of the continental margin?

Correct AnswerverifiedShow Answer

Discuss the distribution of seafloor sediments in the ocean basins. What are the different types of sediments, and what are the factors that control their distribution (geologic setting, climate, etc.)?

Correct AnswerverifiedShow Answer

Which one of the following concerning mid-ocean ridges is false?

Correct AnswerverifiedShow Answer

The Atlantic and Pacific basins have oceanic ridges; the Indian Ocean has no oceanic ridge.

Correct AnswerverifiedShow Answer

"Black smokers" are associated with ________.

Correct AnswerverifiedShow Answer

Flat-topped volcanic structures located on the floor of the deep ocean basin are termed ________.

Correct AnswerverifiedShow Answer

The BEST definition of the outer edge of the continental shelf is that point where ________.

Correct AnswerverifiedShow Answer

Word Analysis. Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. Choose the option which does not fit the pattern.

Correct AnswerverifiedShow Answer

Valleys that lead from the continental shelf into deeper waters are known as ________.

Correct AnswerverifiedShow Answer

The gently sloping submerged surface extending from the shoreline toward the deep ocean is termed the ________.

Correct AnswerverifiedShow Answer

Which one of the following would most likely be covered with thick turbidite layers?

Correct AnswerverifiedShow Answer

Label the different features of the passive continental margin on the diagram below.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Sediments derived primarily from the products of weathering on the continents are called ________.

Correct AnswerverifiedShow Answer

Abyssal plains with sediments covering the seafloor igneous rocks are more extensive in the central Pacific basin than in the North Atlantic.

Correct AnswerverifiedShow Answer

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