Unit 4 Review: Earth's Wind and Ocean Circulation

• regulating when tides occur in coastal areas

• trapping heat at the equator to regulate the global climate

• distributing heat from the uneven absorption of solar energy

• increasing the rate of evaporation to transport water to areas experiencing droughts

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• The warm air in Earth’s atmosphere and the warm water in Earth’s oceans sink instead of rise.

• The heat source for Earth’s atmosphere and oceans is the sun, which heats from above instead of below.

• Convection cells in Earth’s atmosphere and oceans flow in the same direction instead of opposite directions.

• Cold air in Earth’s atmosphere and cold water in Earth’s oceans are less dense than warm air and warm water instead of being more dense.

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What causes winds to form?

• areas of low pressure moving to areas of high pressure

• air moving vertically in the atmosphere

• gravity

• uneven heating of Earth's surfaces

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Which of the following shows how air moves around areas of high pressure?

• Air moves OUT OF or AWAY from areas of high pressure.

• Air moves INTO or TOWARDS areas of high pressure.

• Air can either move INTO our OUT OF areas of high pressure.

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Which of the following describes the general air pressure at the equator (0 degrees) and at the poles (90 degrees)?

• There is HIGH pressure at the poles and LOW pressure at the equator.

• There is LOW pressure at the poles and high pressure at the equator.

• The pressure is LOW at both the equator and poles.

• The pressure is HIGH at both the equator and poles.

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Winds would generally just move north and south, but they tend to "curve" away from their intended path because of

• gravity.

• convection.

• Earth's rotation.

• temperature differences on Earth.

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The term "prevailing wind" describes

• what the wind is doing outside right now.

• the usual or average direction that winds come from.

• the usual or average direction that winds blow to.

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"Wind belts" are areas of wind that have the same prevailing direction. These belts happen every __ degrees of latitude.

• 10

• 20

• 30

• 60

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In which wind belt do we live?

• Trade Winds

• Doldrums

• Easterlies

• Westerlies

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Which factors affect SURFACE ocean currents? (Choose all that apply)

• Earth's rotation

• salt content of water

• winds

• continents/landmasses blocking the movement of water

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