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