Finance

The oldest oceanic crust is approximately __________ years old.

4.6 billion

15 billion

1 thousand

50 million

250 million

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Continental shelves on trailing margins of continents are

broad

all of the choices are correct

gently sloping

often have large rivers

none of the choices are correct

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Changes in sea level alternately flood and expose the edges of continents. What is the primary control on sea-level changes?

Quiz – Introduction to Oceanography Section N01 Fall Semester 2013 CO… https://westga.view.usg.edu/d2l/lms/quizzing/user/attempt/quiz_attempt…

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Question 108 (1 point)

Question 109 (1 point)

Question 110 (1 point)

Question 111 (1 point)

Question 112 (1 point)

changes in ocean salinity

changes in depth of the continental margins

changes in height of the continental margins

changes in ice sheet volume

mountain building

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On average, the continental margin is about ________ miles wide and ________ meters deep.

100, 400

400, 100

40, 120

120, 40

1000, 1000

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Continental shelves on trailing (passive) continental margins are:

often have large rivers

broad

each of the choices is correct

gently sloping

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The general name for the deepest portion of any basin is

a sounding

a seamount

a deep

a profundity

a trench

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We know that 71% of Earth’s surface is covered by ocean, but what percent of Earth’s crust is oceanic?

29

71

34

98

66

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The widest continental shelves in the world are located in:

Quiz – Introduction to Oceanography Section N01 Fall Semester 2013 CO… https://westga.view.usg.edu/d2l/lms/quizzing/user/attempt/quiz_attempt…

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Question 113 (1 point)

Question 114 (1 point)

Question 115 (1 point)

Australia in the South Pacific Ocean

India the Indian Ocean

Brazil in the South Atlantic Ocean

Siberia in the Arctic Ocean

Japan in the North Pacific Ocean

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In the accompanying photomicrograph, letter “D” indicates which type of calcareous marine microorganism?

coccolithophore (single)

coccoliths (individual plates)

coccolithophores (multiple)

foraminifers

diatom (siliceous)

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Which of the following are calcareous plants?

diatoms

ooids

foraminifera

radiolaria

coccoliths

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Poorly sorted sediment deposits containing rock fragments in a fine-grained matrix that might conjure images of Alfred Wegener are called

Quiz – Introduction to Oceanography Section N01 Fall Semester 2013 CO… https://westga.view.usg.edu/d2l/lms/quizzing/user/attempt/quiz_attempt…

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Question 116 (1 point)

Question 117 (1 point)

Question 118 (1 point)

Question 119 (1 point)

lutites

stalactites

breccias

melanges

diamictites

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Where on the ocean floor would you be most likely to find sediment dominated by foraminifera?

below the CCD

in the deepest parts of ocean basins

beneath warm waters

in shallower portions of ocean basins

beneath cold waters

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Sediments found on continental shelves, are derived from land and ocean sources, and which may accumulate very rapidly are classified as ________ sediments.

pelagic

cosmogenous

lithogenous

neritic

hydrogenous

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What is the name of the type of fine-grained biogenous sediment consisting primarily of dead single-celled marine organisms that have settled to the bottom the ocean.

turbidites

ooids

lithogenous

manganese nodules

ooze

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In the accompanying photomicrograph, the organisms labeled E fit all of the following descriptions except ___.

foraminifers

coccoliths (individual plates)

coccolithophores (multiple)

diatom (siliceous)

coccolithophore (single)

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Quiz – Introduction to Oceanography Section N01 Fall Semester 2013 CO… https://westga.view.usg.edu/d2l/lms/quizzing/user/attempt/quiz_attempt…

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Question 120 (1 point)

On the bar graph in the accompanying diagram, bar “C” corresponds to which type of sediment?

abyssal clay

ooliths

siliceous ooze

manganese nodules

calcareous ooze

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Save All Responses Go To Submit Quiz

Quiz – Introduction to Oceanography Section N01 Fall Semester 2013 CO… https://westga.view.usg.edu/d2l/lms/quizzing/user/attempt/quiz_attempt…

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