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