2.4 Review CC Question Preview (ID: 43516)
Ocean Currents.
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Which three factors most directly affect surface currents in the oceans?
a) upwelling, convection, and the sun’s energy
b) surface winds, the Coriolis effect, and continental deflection
c) deep currents, convection currents, and surface winds
d) dissolved solids, dissolved gases, and the sun’s energy
What causes convection currents to form in the oceans?
a) surface winds
b) the Coriolis effect
c) continental deflection
d) differences in water density
How does convection cause ocean currents?
a) During the process of convection, water that was warmed by the sun loses heat. The water cools, becomes denser, and sinks.
b) During the process of convection, energy is transferred to the atmosphere, forming winds. These winds power surface currents.
c) During the process of convection, the heating of surface water by the sun results in upwelling.
d) There are no correct answers listed.
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) a figure of the sun
b) labels indicating temperature
c) an arrow representing wind
d) arrows showing surface currents
What role does heat play in the formation of convection currents?
a) When water gains heat, it becomes denser and sinks.
b) When water loses heat to cooler water, the cooler water becomes denser and sinks.
c) When water loses heat, it becomes denser and sinks.
d) When water gains heat, it dissolves more solids and gases, becomes denser, and sinks.
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.
Which of the following movements of ocean water has the greatest direct effect on the growth of producers?
a) deep current
b) upwelling
c) surface current
d) convection current
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 deep currents is transported to the ocean’s surface.
c) Heat energy is transported from areas of lower temperature to areas of higher temperature.
d) Heat energy in warm surface currents is transported to areas near Earth’s poles.
Which of the following correctly shows the chain of energy transfers that create surface currents on the ocean?
a) solar energy — wind energy — surface currents
b) wind energy — solar energy — surface currents
c) tidal energy — wind energy — surface currents
d) geothermal energy — wind energy — surface currents
Which three factors most directly affect surface currents in the oceans?
a) upwelling, convection, and the sun’s energy
b) deep currents, convection currents, and surface winds
c) dissolved solids, dissolved gases, and the sun’s energy
d) surface winds, the Coriolis effect, and continental deflection
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