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2.4 Review CC
Test Description: Ocean Currents
Instructions: Answer all questions to get your test result.
1) Which three factors most directly affect surface currents in the oceans?
A
deep currents, convection currents, and surface winds
B
surface winds, the Coriolis effect, and continental deflection
C
upwelling, convection, and the sun’s energy
D
dissolved solids, dissolved gases, and the sun’s energy
2) What causes convection currents to form in the oceans?
A
continental deflection
B
surface winds
C
the Coriolis effect
D
differences in water density
3) How does convection cause ocean currents?
A
During the process of convection, the heating of surface water by the sun results in upwelling.
B
During the process of convection, water that was warmed by the sun loses heat. The water cools, becomes denser, and sinks.
C
There are no correct answers listed.
D
During the process of convection, energy is transferred to the atmosphere, forming winds. These winds power surface currents.
4) Josefina is working on a computer model of upwelling. She draws an arrow to represent the movement of water. What should she draw to represent the cause of upwelling?
A
labels indicating temperature
B
arrows showing surface currents
C
a figure of the sun
D
an arrow representing wind
5) What role does heat play in the formation of convection currents?
A
When water loses heat, it becomes denser and sinks.
B
When water gains heat, it dissolves more solids and gases, becomes denser, and sinks.
C
When water loses heat to cooler water, the cooler water becomes denser and sinks.
D
When water gains heat, it becomes denser and sinks.
6) Which of the following can cause an increase in density that results in a deep ocean current?
A
Warm water loses energy to its surroundings and cools.
B
The sun heats the water’s surface.
C
A warm wind blows across cold water.
D
An iceberg melts, adding fresh water to ocean water.
7) Which of the following movements of ocean water has the greatest direct effect on the growth of producers?
A
convection current
B
deep current
C
surface current
D
upwelling
8) Which of the following best describes the movement of heat energy in the global ocean?
A
Heat energy is transported to the equator from the continents.
B
Heat energy in warm surface currents is transported to areas near Earth’s poles.
C
Heat energy in deep currents is transported to the ocean’s surface.
D
Heat energy is transported from areas of lower temperature to areas of higher temperature.
9) Which of the following correctly shows the chain of energy transfers that create surface currents on the ocean?
A
geothermal energy — wind energy — surface currents
B
solar energy — wind energy — surface currents
C
wind energy — solar energy — surface currents
D
tidal energy — wind energy — surface currents
10) Which three factors most directly affect surface currents in the oceans?
A
dissolved solids, dissolved gases, and the sun’s energy
B
deep currents, convection currents, and surface winds
C
upwelling, convection, and the sun’s energy
D
surface winds, the Coriolis effect, and continental deflection
*select an answer for all questions
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