Ocean Currents

Front

What do the pictured ocean currents do?

Back

carry warm water away from the equator

Front

What happens when different parts of the oceans are heated unevenly?

Back

move in convection currents.

Front

What describes the movement of water between the poles and the equator?

Back

ocean currents

Front

In the process of upwelling along ocean coasts, warm surface water is driven out to sea by winds. What happens to the cold water beneath it?

Back

It rises to the surface to replace the warm water.

Front

A student puts water in a long glass tank to make a model of ocean currents. He heats the left side of the tank and cools the right side. This heating and cooling produces a current of water in the tank. Which diagram correctly shows the flow of the water?

Back

Front

What causes the currents of the Earth's oceans?

Back

global winds and differences in temperature and salinity.

Front

A student wants to make a model of ocean currents. She divides a long glass tank in half, as shown below. She puts fresh water in one side and salt water in the other side. Next, the student removes the barrier between the two sides. Which diagram correctly shows the flow of the water when the barrier is removed?

Back

Front

Which is true?

• The ocean has no effect on the temperature on the land.
• All ocean water is the same temperature.
• Ocean water does not move between locations.
• Ocean currents affect temperatures on land.

Back

Ocean currents affect temperatures on land.

Front

What causes water to rise to the top of the ocean?

Back

It becomes less dense than the surrounding water.

Front

What is one effect of convection in the ocean's global conveyor belt system?

Back

Water continually circulates throughout Earth's oceans.