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7 Cards in this Set
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- Back
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What are the 5 atmosperhic levels?
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Troposphere: extends from sfc. to about 36,000 FT.
Tropopause: acts as a lid to confine water vapor, and associated weather, to the troposphere Stratosphere: has the same composition of troposphere and extends to 160,000 FT. Mesosphere and Thermosphere: no practical influence on weather. |
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What is Convection ?
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A circulation process where heated air becomes lighter and less dense, and then denser heavier cool air, sinks down replacing warmer rising air.
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Name the three cell circulation pattern ?
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- Hadley Cell > 0 - 30 degree
- Ferrel Cell > 30 - 60 - Polar Cell > 60 - 90 |
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How does air generally flow ?
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from the COOL, DENSE air of HIGHS into the WARM, LESS DENSE air of LOWS.
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What is Coriolis Force ?
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it causes all free-moving objects to trace a curved path due to the earth's rotation.
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What is Frictional Force?
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it reduces the Coriolis Force, making the pressure gradient stronger, causing a wind to shift directions when near the earths surface.
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What causes a Sea Breeze ?
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During the day, temp. differential causes high pressures from the cooler sea to go towards the lower pressures in warmer land causing a breeze/wind.
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