Ocean 115 - Introduction to Oceanography » Spring 2021 » Week 10 Post Reading Quiz Oceanic Circulation
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Question #1
Which currents are the slow, deep currents that affect seawater beneath the pycnocline?
A.
thermohaline
B.
turbidity
C.
surface
D.
deep ocean
E.
thermocline
Question #2
How much of the water in the world ocean is involved in surface currents?
A.
50%
B.
90%
C.
1%
D.
20%
E.
10%
Question #3
Surface currents are driven mainly by ____.
A.
density differences
B.
wind friction
C.
salinity differences
D.
temperature differences
E.
deep-ocean movements
Question #4
What describes the theoretical direction of Ekman transport in the Southern Hemisphere?
A.
90° to the left of wind direction
B.
45° to the left of wind direction
C.
45° to the right of wind direction
D.
90° to the right of wind direction
E.
30° to the left of wind direction
Question #5
The fastest and deepest geostrophic currents are ____.
A.
transverse currents
B.
counter currents
C.
eastern boundary currents
D.
equatorial currents
E.
western boundary currents
Question #6
Which winds converge to produce the transverse equatorial surface current?
A.
Westerlies and easterly trade winds
B.
Easterly trade winds
C.
Polar easterlies and Wesrterlies
D.
Coastal breezes
E.
Santa Ana Winds
Question #7
Which winds converge to produce the transverse surface current at mid latitudes?
A.
Santa Ana Winds with Coastal Breezes
B.
Polar easterlies and trade winds
C.
Westerlies & Polar easterlies
D.
Trade Winds and westerlies
Question #8
Thermohaline currents are driven by:
A.
Gravity
B.
Wind
C.
Magnetism
D.
Tilt of Earth's rotational axis
E.
Coriolis Effect
Question #9
Which of the following currents is responsible for carrying oxygen into the deep ocean?
A.
Upwelling Currents
B.
Eastern Boundary Currents
C.
Ekman Currents
D.
Thermohaline currents
E.
Equatorial Currents
Question #10
Which of the following statements is FALSE?
A.
Gyres rotate counterclockwise in the Southern hemisphere
B.
Tropical cyclones spin counterclockwise in the Northern hemisphere
C.
Gyres rotate counterclockwise in the Northern Hemisphere
D.
Tropical cyclones spin clockwise in the Southern hemisphere
E.
Gyres rotate clockwise in the Northern Hemisphere
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