Question 1

Downwelling is produced by diverging surface currents.

Accepted Answer

A) True 
 B)False  False

Question 2

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

Accepted Answer

A) True 
 B)False  False

Question 3

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. D

Question 4

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.

Question 5

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

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 coastal

Question 7

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 8

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 water

Question 9

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)   Labrador

Question 10

Isothermal water is stable and does not overturn.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Downwellings occur at surface convergences.

Accepted Answer

A) True 
 B)False

Question 13

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 direction

Question 14

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 Australia

Question 15

Prevailing westerly winds cause easterly currents.

Accepted Answer

A) True 
 B)False

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.

Question 17

The North Atlantic gyre rotates counterclockwise.

Accepted Answer

A) True 
 B)False

Question 18

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 19

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.

Question 20

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

Exam 7: Ocean Structure and Circulation

Downwelling is produced by diverging surface currents.

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

North Atlantic deep water

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

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

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

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

Order the following water bodies from highest to lowest salinity.

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

Isothermal water is stable and does not overturn.

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

Downwellings occur at surface convergences.

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

The southeast trade winds directly produce the _______ current.

Prevailing westerly winds cause easterly currents.

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

The North Atlantic gyre rotates counterclockwise.

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

Of the major ocean gyres, cool currents are

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.