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