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23 Cards in this Set
- Front
- Back
anemometer
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An instrument used to measure wind SPEED.
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wind chill factor
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The increased cooling that a wind can cause.
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local winds
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winds that blow over short distances
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land breeze
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The flow of air from land to a body of water.
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monsoons
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Sea and land breezes over a large region that change direction with the seasons.
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sea breeze
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A wind that blows from an ocean or lake onto the land.
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global winds
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Winds that blow steadily from specific directions over long distances.
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Coriolis effect
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The way the Earth's rotation makes winds curve.
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Monsoons happen in _______.
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Monsoons happen in SOUTH AND SOUTHEAST ASIA
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The movement of air between the equator and the poles produces?
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Global winds
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wind vane
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A device which determines wind DIRECTION.
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The name of a wind tells you__________.
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The name of a wind tells you the direction a wind IS COMING FROM.
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Name the three major global wind belts.
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1. trade winds
2. prevailing westerlies 3. polar easterlies |
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doldrums
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A calm area near the Equator where warm air rises. There is little or no wind.
(The trade winds meet at the doldrums) |
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horse latitudes
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Belt of calm air at about 30 degrees north and south. Becalmed sailors ran out of food and threw their horses overboard here.
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Trade winds
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Belt of winds between 30 degrees N or S and the Equator. The winds blow towards the Equator and are turned west by the Coriolis effect.
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prevailing westerlies
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Belt of winds between 30 and 60 degrees N or S. The winds blow from the SW in the northern hemisphere and from the SW in the southern hemisphere.
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Polar easterlies
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Belt of winds from the poles to 60 degrees N or S. Winds blow from the poles and and are turned by the Coriolis effect to the west.
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polar front
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At 60 degrees N and S the polar easterlies meet the prevailing westerlies mixing warm and cold air. The polar front has a MAJOR effect on weather in the USA.
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jet streams
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Global west winds found 10 kilometers above the Earth and only a few kilometers deep. They blow at 200 to 400 kilometers an hour.
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How do jet streams effect airplanes?
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Airplanes flying east can be helped by flying in the jet stream, gaining speed and saving fuel. Airplanes flying west are slowed down.
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What is the cause of local winds?
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The unequal heating of Earth's surface within a small area.
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All winds are caused by?
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differences in air pressure
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