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15 Cards in this Set
- Front
- Back
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The movement of air molecules from an area of high presure to an area of low pressure.
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Wind
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____on earths surface creates areas of different pressure and winds that circulate the air.
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Temparature Differences
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____is heated more than any other place
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Air above the equator
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What causes the temperature differences?
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The surface is curved,not flat,so not all areas recieve the same amount of radiation.
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Less radiation at the poles->cooler->more dense->sinks->moves along surface. (Convection current emerges)Why is the coriols effect caused?
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Because the earth rotates.
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Air masses moving south in the Northern Hemisphere are turned__from their path.
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Westward
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The flow of air caused by____have caused distinct wind patterns.
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Differences in heating and the coloris effect.
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Wind patterns determine
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1.)Weather
2.)When and where ships and planes travel efficiently. |
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Sailors long ago had to avoid the _______-The windles zone of the equator,seems motionless
-The air is moving straight up. Why?? |
Air at the equator is very hot and not very dense so it rises.
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-Steady winds here blow southwest.
- these are the trade winds. -provide route from Europe to America. -Better place to sail |
15 degress North of the equator
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These are the ______prevailing westerlies.
-Route from america to Europe. -These blow from southwest to Northwest -Winds blow oposite area of trade winds. |
Between 30-60 north/south of the equator
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___is responsible for canadian and U.S weather movements.
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The prevailing Westerlies
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The last major wind system at the surface.
-These blow from North East to southwest (like trade winds) |
Polar Easterlies
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These __,___,__are the major wind systems at the Earths surface.
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trade winds,prevailing westerlies,polar Easterlies
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hot air___
cold air__- |
Rises
Sinks |
