Ocean 115 - Introduction to Oceanography » Spring 2023 » 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.
thermocline
C.
surface
D.
deep ocean
E.
turbidity
Question #2
How much of the water in the world ocean is involved in surface currents?
A.
10%
B.
20%
C.
50%
D.
1%
E.
90%
Question #3
Surface currents are driven mainly by ____.
A.
wind friction
B.
deep-ocean movements
C.
salinity differences
D.
temperature differences
E.
density differences
Question #4
What describes the theoretical direction of Ekman transport in the Southern Hemisphere?
A.
45° to the right of wind direction
B.
90° to the right of wind direction
C.
90° to the left of wind direction
D.
45° to the left 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.
western boundary currents
E.
equatorial currents
Question #6
Which winds converge to produce the transverse equatorial surface current?
A.
Polar easterlies and Wesrterlies
B.
Coastal breezes
C.
Westerlies and easterly trade winds
D.
Santa Ana Winds
E.
Easterly trade winds
Question #7
Which winds converge to produce the transverse surface current at mid latitudes?
A.
Trade Winds and westerlies
B.
Santa Ana Winds with Coastal Breezes
C.
Westerlies & Polar easterlies
D.
Polar easterlies and trade winds
Question #8
Thermohaline currents are driven by:
A.
Magnetism
B.
Coriolis Effect
C.
Tilt of Earth's rotational axis
D.
Wind
E.
Gravity
Question #9
Which of the following currents is responsible for carrying oxygen into the deep ocean?
A.
Eastern Boundary Currents
B.
Thermohaline currents
C.
Upwelling Currents
D.
Ekman Currents
E.
Equatorial Currents
Question #10
Which of the following statements is FALSE?
A.
Tropical cyclones spin clockwise in the Southern hemisphere
B.
Tropical cyclones spin counterclockwise in the Northern hemisphere
C.
Gyres rotate counterclockwise in the Northern Hemisphere
D.
Gyres rotate counterclockwise in the Southern hemisphere
E.
Gyres rotate clockwise in the Northern Hemisphere
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