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20 Cards in this Set
- Front
- Back
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Cold front |
A fast moving cold air mask overtakes a warm air mass |
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Warm front |
A warm air mass over takes a slow moving cold air mass |
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Stationary front |
Cold and warm air masses meet, but neither can move the other |
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Occluded front |
A warm air mass is caught between two cooler air masses |
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Polar air mass |
Forms north of 50° north latitude and south of 50° south latitude |
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Tropical air mass |
Forms over tropics. Has low air pressure and warm temperatures |
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Maritime air mass |
Forms over oceans can be very humid |
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Continental air mass |
Forms over land and can be dry |
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Prevailing westerlies |
Major wind belts that generally push west to east |
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Jet streams |
Fast winds that are in prevailing westerlies and are 10 kilometers above the earth |
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Fronts |
Big air masses that move across land, oceans and collide with each other |
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Cyclone |
A swirling center of low air pressure |
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Anticyclones |
High air pressure centers of dry air |
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Coriolis effect |
The effect of Earths rotation on the direction of winds and currents |
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Wind |
Moving air caused by the heating of the earth and sun |
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Temp and moisture |
The words that determine the type of air masses |
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Maritime tropical |
Warm & humid air mass |
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Maritime polar |
Cold & humid air mass |
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Continental tropical |
Hot and dry air mass |
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Continental polar |
Cold and usually dry air mass |
