Question 1

Isothermal water is stable and does not overturn.

Accepted Answer

A) True 
 B)False

Question 2

Wind driven surface water moves in a complex manner as a function of depth. This is called the ________.

Accepted Answer

The answer of Wind driven surface water moves in a...

Question 3

Meanders in the Gulf Stream current can pinch off to form warm and cold core ________.

Accepted Answer

The answer of Meanders in the Gulf Stream current can...

Question 4

The clockwise gyre of the Arctic Ocean is driven by the polar easterlies.

Accepted Answer

A) True 
 B)False

Question 5

Prevailing westerly winds cause easterly currents.

Accepted Answer

A) True 
 B)False

Question 6

Prevailing ________ winds are needed to provide the net movement of surface water seaward along the west coast of North America.

Accepted Answer

A)   northerly
B)   easterly
C)   westerly
D)   southerly
E)   seasonal coastalF) All of the above
G) C) and D)

Question 7

The North Atlantic gyre rotates counterclockwise.

Accepted Answer

A) True 
 B)False

Question 8

The southeast trade winds directly produce the _______ current.

Accepted Answer

A)   Gulf Stream
B)   Equatorial Counter
C)   South Equatorial
D)   West Wind Drift
E)   East AustraliaF) A) and C)
G) A) and E)

Question 9

Many combinations of salinity and temperature of seawater can produce the same density of seawater.

Accepted Answer

A) True 
 B)False

Question 10

Downwelling is produced by diverging surface currents.

Accepted Answer

A) True 
 B)False  False

Question 11

Downwellings occur at surface convergences.

Accepted Answer

A) True 
 B)False

Question 12

Order the following water bodies from highest to lowest salinity.

Accepted Answer

A)   Mediterranean intermediate water, North Atlantic deep water, Antarctic bottom water
B)   North Atlantic deep water, Mediterranean intermediate water, Antarctic bottom water
C)   Antarctic bottom water, Mediterranean intermediate water, North Atlantic deep water
D)   Mediterranean intermediate water, Antarctic bottom water, North Atlantic deep water
E)   Antarctic bottom water, North Atlantic deep water, Mediterranean intermediate waterF) B) and C)
G) A) and D)

Question 13

North Atlantic deep water

Accepted Answer

A)   flows to the south.
B)   rises toward the surface in the Southern Ocean.
C)   is formed off Labrador.
D)   All of these are correct.
E)   None of these are correct.F) A) and B)
G) B) and E) D

Question 14

A water mass at depth in the ocean has temperatures and salinities which are usually determined by the conditions that were present when the water mass was last at the sea surface.

Accepted Answer

A) True 
 B)False

Question 15

Of the major ocean gyres, cool currents are

Accepted Answer

A)   eastern boundary currents.
B)   western boundary currents.
C)   equatorial currents.
D)   northern boundary currents.
E)   It depends on the ocean basin.F) A) and E)
G) C) and D)

Question 16

A seasonal north wind blowing along the west coast of a landmass in the Northern Hemisphere produces

Accepted Answer

A)   downwelling in winter.
B)   downwelling in summer.
C)   upwelling in winter.
D)   upwelling in summer.
E)   overturn in all seasons.F) B) and C)
G) A) and E)

Question 17

The current at the eastern boundary of the Sargasso Sea is the ______ Current.

Accepted Answer

A)   Gulf Stream
B)   North Equatorial
C)   Canary
D)   Greenland
E)   LabradorF) None of the above
G) A) and E)

Question 18

The thermocline found in water above 500m at temperate latitudes disappears and the water column becomes neutral in

Accepted Answer

A)   spring.
B)   summer.
C)   fall.
D)   winter.
E)   None of these are correct; it does not disappear.F) A) and E)
G) A) and B)

Question 19

The average movement of all water affected by the wind is ______ degrees to the ______ of the wind motion in the Southern Hemisphere.

Accepted Answer

A)   45; right
B)   45; left
C)   90; right
D)   90; left
E)   180; no directionF) C) and D)
G) A) and B)

Question 20

Southern Hemisphere winds move surface water 90° to the left of the direction of the wind.

Accepted Answer

A) True 
 B)False  False

Exam 7: Ocean Structure and Circulation

Isothermal water is stable and does not overturn.

Correct AnswerverifiedShow Answer

Wind driven surface water moves in a complex manner as a function of depth. This is called the ________.

Correct AnswerverifiedShow Answer

Meanders in the Gulf Stream current can pinch off to form warm and cold core ________.

Correct AnswerverifiedShow Answer

The clockwise gyre of the Arctic Ocean is driven by the polar easterlies.

Correct AnswerverifiedShow Answer

Prevailing westerly winds cause easterly currents.

Correct AnswerverifiedShow Answer

Prevailing ________ winds are needed to provide the net movement of surface water seaward along the west coast of North America.

Correct AnswerverifiedShow Answer

The North Atlantic gyre rotates counterclockwise.

Correct AnswerverifiedShow Answer

The southeast trade winds directly produce the _______ current.

Correct AnswerverifiedShow Answer

Many combinations of salinity and temperature of seawater can produce the same density of seawater.

Correct AnswerverifiedShow Answer

Downwelling is produced by diverging surface currents.

Correct AnswerverifiedFalse

Downwellings occur at surface convergences.

Correct AnswerverifiedShow Answer

Order the following water bodies from highest to lowest salinity.

Correct AnswerverifiedShow Answer

North Atlantic deep water

Correct AnswerverifiedD

A water mass at depth in the ocean has temperatures and salinities which are usually determined by the conditions that were present when the water mass was last at the sea surface.

Correct AnswerverifiedShow Answer

Of the major ocean gyres, cool currents are

Correct AnswerverifiedShow Answer

A seasonal north wind blowing along the west coast of a landmass in the Northern Hemisphere produces

Correct AnswerverifiedShow Answer

The current at the eastern boundary of the Sargasso Sea is the ______ Current.

Correct AnswerverifiedShow Answer

The thermocline found in water above 500m at temperate latitudes disappears and the water column becomes neutral in

Correct AnswerverifiedShow Answer

The average movement of all water affected by the wind is ______ degrees to the ______ of the wind motion in the Southern Hemisphere.

Correct AnswerverifiedShow Answer

Southern Hemisphere winds move surface water 90° to the left of the direction of the wind.

Correct AnswerverifiedFalse

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False

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The average movement of all water affected by the wind is degrees to the of the wind motion in the Southern Hemisphere.

Correct Answer
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False