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