Question 1

Oil tankers coming from the Persian Gulf to the U.S. use the ________ current along the east coast of Africa.

Accepted Answer

A)  Canary 
B)  Guinea 
C)  Agulhas 
D)  Benguela 
E)  South Equatorial 
A)  Canary 
B)  Guinea 
C)  Agulhas 
D)  Benguela 
E)  South Equatorial

Question 2

In areas of downwelling, there is not likely to be a near-surface

Accepted Answer

A)  halocline. 
B)  pycnocline. 
C)  thermocline. 
D)  All of these are correct. 
E)  None of these are correct. 
A)  halocline. 
B)  pycnocline. 
C)  thermocline. 
D)  All of these are correct. 
E)  None of these are correct.

Question 3

The Ekman spiral causes current speed to increase with depth.

Accepted Answer

A) True 
 B)False

Question 4

In the Southern Hemisphere the speed of the wind-driven water _______ with depth and the water moves to the _______ of the wind.

Accepted Answer

A)  increases; right 
B)  increases; left 
C)  decreases; right 
D)  decreases; left 
E)  does not change; left 
A)  increases; right 
B)  increases; left 
C)  decreases; right 
D)  decreases; left 
E)  does not change; left

Question 5

Which current flows south along the west coast of the U.S.?

Accepted Answer

A)  North Pacific 
B)  California 
C)  Japanese 
D)  Gulf Stream 
E)  Kuroshio 
A)  North Pacific 
B)  California 
C)  Japanese 
D)  Gulf Stream 
E)  Kuroshio

Question 6

The Indian Ocean gyre rotates counterclockwise.

Accepted Answer

A) True 
 B)False

Question 7

In the Northern Hemisphere, the water surface of the open ocean moves

Accepted Answer

A)  at right angles to the wind. 
B)  against the wind. 
C)  parallel to the wind. 
D)  45 degrees to the right of the wind. 
E)  45 degrees to the left of the wind. 
A)  at right angles to the wind. 
B)  against the wind. 
C)  parallel to the wind. 
D)  45 degrees to the right of the wind. 
E)  45 degrees to the left of the wind.

Question 8

Which of the following is the most common range of speeds for surface currents?

Accepted Answer

A)  0.1 to 0.2 knots 
B)  0.25 to 1.0 knots 
C)  3 to 5 knots 
D)  10 to 15 knots 
E)  100 to 150 knots 
A)  0.1 to 0.2 knots 
B)  0.25 to 1.0 knots 
C)  3 to 5 knots 
D)  10 to 15 knots 
E)  100 to 150 knots

Question 9

Layering in the ocean occurs because

Accepted Answer

A)  surface processes form water layers of differing combinations of salinity and temperature. 
B)  processes at depth add and subtract salt and heat. 
C)  atmospheric processes control conditions at the surface. 
D)  All of these are correct. 
E)  surface processes form water layers of differing combinations of salinity and temperature and atmospheric processes control conditions at the surface. 
A)  surface processes form water layers of differing combinations of salinity and temperature. 
B)  processes at depth add and subtract salt and heat. 
C)  atmospheric processes control conditions at the surface. 
D)  All of these are correct. 
E)  surface processes form water layers of differing combinations of salinity and temperature and atmospheric processes control conditions at the surface.

Question 10

The North Atlantic current is produced by the

Accepted Answer

A)  northeast trade winds. 
B)  southeast trade winds. 
C)  prevailing westerlies. 
D)  polar easterlies. 
E)  seasonal monsoon. 
A)  northeast trade winds. 
B)  southeast trade winds. 
C)  prevailing westerlies. 
D)  polar easterlies. 
E)  seasonal monsoon.

Question 11

Increasing salinity increases density.

Accepted Answer

A) True 
 B)False

Question 12

A good example of thermohaline circulation is found

Accepted Answer

A)  in equatorial regions. 
B)  in the central South Pacific. 
C)  close to Antarctica. 
D)  along the east coast of the U.S. 
E)  in the Gulf of Mexico. 
A)  in equatorial regions. 
B)  in the central South Pacific. 
C)  close to Antarctica. 
D)  along the east coast of the U.S. 
E)  in the Gulf of Mexico.

Question 13

Wind-driven surface currents move at a speed that is ________ the average driving wind speed.

Accepted Answer

A)  the same as 
B)  one tenth 
C)  one one-hundredth 
D)  twice 
E)  None of these are correct; there is no relationship. 
A)  the same as 
B)  one tenth 
C)  one one-hundredth 
D)  twice 
E)  None of these are correct; there is no relationship.

Question 14

Density of Mediterranean Intermediate Water is influenced more by salinity than temperature.

Accepted Answer

A) True 
 B)False

Question 15

A convergence of water occurs at the eastern side of each of the main ocean basins as a result of Ekman transport.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is NOT true about the influence of Ekman Transport on surface currents?

Accepted Answer

A)  The effect extends to a depth of approximately 100 to 150m below sea level. 
B)  The average flow of water is 90 degrees to the direction of wind. 
C)  Each subsequent layer of water moves more quickly than the one above it. 
D)  Surface waters move 45 degrees to the direction of wind. 
E)  All of these statements are true. 
A)  The effect extends to a depth of approximately 100 to 150m below sea level. 
B)  The average flow of water is 90 degrees to the direction of wind. 
C)  Each subsequent layer of water moves more quickly than the one above it. 
D)  Surface waters move 45 degrees to the direction of wind. 
E)  All of these statements are true.

Question 17

Eddies are found at all depths of the oceans.

Accepted Answer

A) True 
 B)False

Question 18

The sea surface at the center of the Sargasso Sea is depressed.

Accepted Answer

A) True 
 B)False

Question 19

Water of a lower density usually lies below water of a greater density.

Accepted Answer

A) True 
 B)False

Question 20

A doppler current meter shows an increase in sound frequency if the water flow is

Accepted Answer

A)  moving away from the meter. 
B)  moving toward the meter. 
C)  moving around the meter. 
D)  increasing. 
E)  decreasing. 
A)  moving away from the meter. 
B)  moving toward the meter. 
C)  moving around the meter. 
D)  increasing. 
E)  decreasing.

Oil tankers coming from the Persian Gulf to the U.S. use the ________ current along the east coast of Africa.

In areas of downwelling, there is not likely to be a near-surface

The Ekman spiral causes current speed to increase with depth.

In the Southern Hemisphere the speed of the wind-driven water _ with depth and the water moves to the _ of the wind.

Which current flows south along the west coast of the U.S.?

The Indian Ocean gyre rotates counterclockwise.

In the Northern Hemisphere, the water surface of the open ocean moves

Which of the following is the most common range of speeds for surface currents?

Layering in the ocean occurs because

The North Atlantic current is produced by the

Increasing salinity increases density.

A good example of thermohaline circulation is found

Wind-driven surface currents move at a speed that is ________ the average driving wind speed.

Density of Mediterranean Intermediate Water is influenced more by salinity than temperature.

A convergence of water occurs at the eastern side of each of the main ocean basins as a result of Ekman transport.

Which of the following is NOT true about the influence of Ekman Transport on surface currents?

Eddies are found at all depths of the oceans.

The sea surface at the center of the Sargasso Sea is depressed.

Water of a lower density usually lies below water of a greater density.

A doppler current meter shows an increase in sound frequency if the water flow is

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

Seawater

The Atmosphere and the Oceans

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Energy, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Prologue: The History of Oceanography

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Exam 7: Ocean Structure and Circulation

Oil tankers coming from the Persian Gulf to the U.S. use the ________ current along the east coast of Africa.

In areas of downwelling, there is not likely to be a near-surface

The Ekman spiral causes current speed to increase with depth.

In the Southern Hemisphere the speed of the wind-driven water _______ with depth and the water moves to the _______ of the wind.

Which current flows south along the west coast of the U.S.?

The Indian Ocean gyre rotates counterclockwise.

In the Northern Hemisphere, the water surface of the open ocean moves

Which of the following is the most common range of speeds for surface currents?

Layering in the ocean occurs because

The North Atlantic current is produced by the

Increasing salinity increases density.

A good example of thermohaline circulation is found

Wind-driven surface currents move at a speed that is ________ the average driving wind speed.

Density of Mediterranean Intermediate Water is influenced more by salinity than temperature.

A convergence of water occurs at the eastern side of each of the main ocean basins as a result of Ekman transport.

Which of the following is NOT true about the influence of Ekman Transport on surface currents?

Eddies are found at all depths of the oceans.

The sea surface at the center of the Sargasso Sea is depressed.

Water of a lower density usually lies below water of a greater density.

A doppler current meter shows an increase in sound frequency if the water flow is

The Water Planet

Earth Structure and Plate Tectonics

The Sea Floor and Its Sediments

The Physical Properties of Water

Seawater

The Atmosphere and the Oceans

The Waves

The Tides

Coasts, Beaches, and Estuaries

The Living Ocean

The Plankton, Energy, and Food Webs

The Nekton: Swimmers of the Sea

The Benthos: Living on the Sea Floor

Environmental Issues

The Oceans and Climate Disruption

Prologue: The History of Oceanography

Filters

In the Southern Hemisphere the speed of the wind-driven water _ with depth and the water moves to the _ of the wind.