unit 2 lesson 4

Which three factors most directly affect surface currents in the oceans?

• dissolved solids, dissolved gases, and the sun’s energy

• surface winds, the Coriolis effect, and continental deflection

• deep currents, convection currents, and surface winds

• upwelling, convection, and the sun’s energy

Tags

NGSS.MS-ESS2-6

If Carly wants to add wind belts for the part of the Atlantic just south of the equator, how should she draw the arrows?

• The arrows should curve downward to the left.

• The arrows should curve upward to the right.

• The arrows should curve downward to the right.

• The arrows should curve upward to the left.

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NGSS.MS-ESS2-6

How does convection cause ocean currents?

• During the process of convection, water that was warmed by the sun loses heat. The water cools, becomes denser, and sinks.

• During the process of convection, energy is transferred to the atmosphere, forming winds. These winds power surface currents.

• During the process of convection, more minerals and gases dissolve in warm water. This increases the density of the warm water and causes it to sink.

• During the process of convection, the heating of surface water by the sun results in upwelling.

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NGSS.MS-ESS2-6

Which of the following can cause an increase in density that results in a deep ocean current?

• The sun heats the water’s surface.

• A warm wind blows across cold water.

• An iceberg melts, adding fresh water to ocean water.

• Warm water loses energy to its surroundings and cools.

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NGSS.MS-ESS2-6

NGSS.MS-PS1-4

Which of the following movements of ocean water has the greatest direct effect on the growth of producers?

• convection current

• upwelling

• deep current

• surface current

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is upwelling?

• currents that occur deep in the ocean

• the movement of deep, cold, nutrient-rich water to the surface.

• the curving of the path of a moving object from an otherwise straight path due to Earth’s rotation

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

What is convection current?

• the curving of the path of a moving object from an otherwise straight path due to Earth’s rotation

• movement of water that results from density differences

• currents that happen at or near the Earth's surface

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NGSS.MS-ESS2-6

What is deep current?

• movement of water that results from density differences

• movements of ocean water far below the surface

• the movement of deep, cold, nutrient-rich water to the surface.

What is the Coriolis effect?

• a horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean’s surface

• when currents get deflected by continents

• the curving of the path of a moving object from an otherwise straight path due to Earth’s rotation

Tags

NGSS.MS-ESS2-6

What is a surface current?

• movements of ocean water far below the surface

• a horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean’s surface

• the movement of deep, cold, nutrient-rich water to the surface.

Tags

NGSS.MS-ESS2-6