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Online Quizzing
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1

Changes in the density of seawater are caused by changes in:
A)temperature
B)pressure
C)salinity
D)all of the above
E)a and c
2

The density of seawater increases with:
A)increasing salinity
B)increasing temperature
C)decreasing pressure
D)decreasing temperature
E)a and d
3

The well-mixed surface layer in the oceans extends to a depth of about:
A)100 m
B)500 m
C)1000 m
D)10 m
E)50 m
4

Water moving horizontally at the surface toward a region of sinking is called:
A)upwelling
B)divergence
C)convergence
D)thermohaline
E)chaotic
5

The water with the second highest density is:
A)Antarctic bottom water
B)North Atlantic deep water
C)Mediterranean water
D)South Atlantic deep water
E)Caribbean heavy water
6

The deflection of the surface water is at an angle of ____ to the ________ of the direction of the wind in the Southern Hemisphere.
A)30°, right
B)45°, right
C)90°, left
D)45°, left
E)30°, left
7

Blowing wind will generate motion in the water to a depth of about:
A)1 km
B)150 m
C)50 m
D)1000 m
E)10 m
8

The current that circles the globe around Antarctica is called:
A)West Wind Drift
B)southern circumpolar current
C)Antarctic current
D)Agulhas current
E)Kuroshio current
9

Deep water is often rich in:
A)dissolved gas
B)plant life
C)nutrients
D)all of the above
E)a and c
10

OTEC systems require water temperature differences of at least ________ °C.
A)5
B)10
C)20
D)30
E)35





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