Ocean Currents Flashcard

Front

What role does heat play in the formation of convection currents?

Back

When water loses heat, it becomes denser and sinks.

Front

El Niño conditions occur when the surface waters of the Pacific Ocean are warmer than normal near the equator. El Niño conditions usually start near the end of December and last for many months. What change would be observed in ocean temperatures?

Back

Beginning in December, the ocean temperatures would be higher for several months

Front

Which action can cause an increase in density that results in a deep ocean current? Options: A warm wind blows across cold water, An iceberg melts, adding fresh water to ocean water, The sun heats the water’s surface, Warm water loses energy to its surroundings and cools.

Back

Warm water loses energy to its surroundings and cools.

Front

Which sequence shows the chain of energy transfers that create surface ocean currents on the ocean?

Back

solar energy → wind energy → surface currents

Front

What factor causes surface currents north and south of the equator to move in different directions?

Back

the Coriolis effect

Front

Conclusion about Earth's surface currents from Malachi's map?

Back

Surface currents in the Southern Hemisphere flow in a counterclockwise direction.

Front

A burner is placed below the right side of a beaker. Which image shows the motion of the liquid that will result? Options: A, B, C, D

Back

B

Front

What are two reasons that ocean water sinks in the Arctic Ocean?

Back

The surface water is colder and more salty than normal.