Question 1

The discovery and study of ocean floor contours is called .

Accepted Answer

A)   bathymetry
B)   marine science
C)   stratigraphy
D)   paleoceanography

Question 2

The submerged outer edge of a continent is called the .

Accepted Answer

A)   abyssal plain
B)   continental margin
C)   ocean basin
D)   continental convergence zone

Question 3

Where is the widest continental shelf located?

Accepted Answer

A)   The Arctic Sea north of Siberia
B)   The western edge of South America
C)   The margin surrounding the Hawai'ian  Islands
D)   The Emperor Seamounts

Question 4

How can a satellite sense the contours of the ocean bottom from space?

Accepted Answer

A)   by shining a laser through the ocean to see the bottom
B)   by using radar to sense the height of the sea surface over submerged features
C)   by using sonar to measure ocean bottom contours directly
D)   by sensing changes in gravity as it flies over trenches and mountain ranges

Question 5

What is sediment and what are the four classifications of marine sediments based on their origin?

Accepted Answer

Sediment is a general term referring to ...

Question 6

Abyssal plains and abyssal hills cover about 25% of the surface of Earth. What are the characteristics of each of these features?

Accepted Answer

Abyssal hills and plains cover about 25%...

Question 7

Which statement accurately describes active continental margins?

Accepted Answer

A)   They are regions of great geological stability.
B)   They are characteristic of the margins along the Atlantic Basin.
C)   They are areas of frequent earthquakes and volcanoes.
D)   They are areas where lithospheric plates are actively moving apart.

Question 8

The transition between the shelf and the deep seafloor is the .

Accepted Answer

A)   littoral zone
B)   continental slope and rise
C)   abyssal plain
D)   mid-ocean ridge

Question 9

Hydrothermal vents such as black smokers are found at spreading centers.

Accepted Answer

A) True 
 B)False

Question 10

Flat-topped seamounts that once rose near or above sea level are called .

Accepted Answer

A)   ridges
B)   island arcs
C)   guyots
D)   abyssal hills

Question 11

Manganese nodules .

Accepted Answer

A)   are a type of cosmogenous sediment
B)   are almost exclusively found on continental shelves
C)   "grow" very slowly, at an average rate of 1 to 10 millimeters per million years
D)   are inexpensive to collect and are, therefore, widely exploited

Question 12

What type of information can scientists derive from observing deep-ocean cores?

Accepted Answer

A)   how much light penetrates the ocean
B)   information about historical changes in Earth's climate
C)   historical changes in tidal cycles
D)   direct measurements of salinity over time

Question 13

What is the deepest feature in the ocean? Where is this feature located, and how did it form? Is this feature, and others like it, tectonically stable or tectonically active?

Accepted Answer

The deepest part of the ocean is the Mar...

Question 14

What is the calcium carbonate compensation depth? Briefly explain why calcareous oozes are not found below this depth.

Accepted Answer

The calcium carbonate compensation depth...

Question 15

The white cliffs of Dover are chalk-like deposits of coccolithophores that are around 100 million years old.

Accepted Answer

A) True 
 B)False

Question 16

The analysis of layered sedimentary deposits in the ocean is known as .

Accepted Answer

A)   stratigraphy
B)   oceanography
C)   marine biology
D)   ecology

Question 17

Describe neritic sediments and explain what you would expect in the composition of a typical neritic sample.

Accepted Answer

Neritic sediments are those that form an...

Question 18

Which type of sediment is most abundant in neritic deposits?

Accepted Answer

A)   terrigenous sediments
B)   biogenous sediments
C)   hydrogenous (or authigenic)  sediments
D)   cosmogenous sediments

Question 19

An example of terrigenous sediment is the manganese nodule.

Accepted Answer

A) True 
 B)False

Question 20

The study of the ocean's past is referred to as .

Accepted Answer

A)   stratigraphy
B)   geology
C)   paleogeochemistry
D)   paleoceanography

Exam 3: The Ocean Floor

The transition between the shelf and the deep seafloor is the .

Correct AnswerverifiedShow Answer

Describe neritic sediments and explain what you would expect in the composition of a typical neritic sample.

Correct AnswerverifiedNeritic sediments are those that form an...View AnswerShow Answer

The study of the ocean's past is referred to as .

Correct AnswerverifiedShow Answer

How can a satellite sense the contours of the ocean bottom from space?

Correct AnswerverifiedShow Answer

Hydrothermal vents such as black smokers are found at spreading centers.

Correct AnswerverifiedShow Answer

The analysis of layered sedimentary deposits in the ocean is known as .

Correct AnswerverifiedShow Answer

Abyssal plains and abyssal hills cover about 25% of the surface of Earth. What are the characteristics of each of these features?

Correct AnswerverifiedAbyssal hills and plains cover about 25%...View AnswerShow Answer

What is the deepest feature in the ocean? Where is this feature located, and how did it form? Is this feature, and others like it, tectonically stable or tectonically active?

Correct AnswerverifiedThe deepest part of the ocean is the Mar...View AnswerShow Answer

What is the calcium carbonate compensation depth? Briefly explain why calcareous oozes are not found below this depth.

Correct AnswerverifiedThe calcium carbonate compensation depth...View AnswerShow Answer

Manganese nodules .

Correct AnswerverifiedShow Answer

What is sediment and what are the four classifications of marine sediments based on their origin?

Correct AnswerverifiedSediment is a general term referring to ...View AnswerShow Answer

What type of information can scientists derive from observing deep-ocean cores?

Correct AnswerverifiedShow Answer

The white cliffs of Dover are chalk-like deposits of coccolithophores that are around 100 million years old.

Correct AnswerverifiedShow Answer

The discovery and study of ocean floor contours is called .

Correct AnswerverifiedShow Answer

Which statement accurately describes active continental margins?

Correct AnswerverifiedShow Answer

Which type of sediment is most abundant in neritic deposits?

Correct AnswerverifiedShow Answer

Where is the widest continental shelf located?

Correct AnswerverifiedShow Answer

Flat-topped seamounts that once rose near or above sea level are called .

Correct AnswerverifiedShow Answer

The submerged outer edge of a continent is called the .

Correct AnswerverifiedShow Answer

An example of terrigenous sediment is the manganese nodule.

Correct AnswerverifiedShow Answer

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Neritic sediments are those that form an...
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Abyssal hills and plains cover about 25%...
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The deepest part of the ocean is the Mar...
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Correct Answer
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The calcium carbonate compensation depth...
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Correct Answer
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Sediment is a general term referring to ...
View Answer

Correct Answer
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