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