U2L4 - Ocean Currents Pretest

Front

What gas in the ocean is about 45 times more concentrated than in the atmosphere?

Back

Carbon dioxide.

Front

How should arrows be drawn to represent wind belts just south of the equator in the Atlantic Ocean?

Back

The arrows should curve upward to the left.

Front

What causes an increase in density that results in a deep ocean current?

Back

Warm water loses energy to its surroundings and cools.

Front

Which is denser: cold water or warm water?

Back

Cold water is more dense than warm water.

Front

What do the arrows on a map showing trade winds and westerlies in the Northern Hemisphere represent?

Back

Movement of ocean water.

Front

What is the primary factor that affects the density of ocean water?

Back

Temperature.

Front

What happens to warm water as it loses energy?

Back

It cools and becomes denser.

Front

What is the role of ocean currents in climate regulation?

Back

They help distribute heat around the planet.

Front

What is the Coriolis effect?

Back

The deflection of moving objects caused by the rotation of the Earth.

Front

What are trade winds?

Back

Winds that blow from east to west in the tropics.