Air Pressure and Wind
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26 terms
Terms | Definitions |
|---|---|
 Pressure Gradient Force | amount of pressure change over a givn distance |
| isobar | line connecting points of equal pressure |
| altitude | as this increases air pressure decreases |
| divergence | must occur alof for a low pressure system to exist |
| cyclone | low pressure center |
| monsoon | seasonal change in wind related to heating and cooling of a landmass |
| wind | horizontal movementof air from areas of low pressure |
| subtropical high | located around 30 degrees latitude |
| sea breeze | occurs durring the day and blows onshore |
| equator | where there is no coriolis effect |
| troposphere | atmospheric layer where the jet streams are found |
| equatorial low | pressure zone characterized by rising air and abunndant precipitation |
| aneroid | small portable barometer |
| cupanerometer | measures wind velocity |
| torricelli | devised first mercury barometer |
| high pressure | expect fair weather when this approaches |
| polar high | gives rise to polar easterlies |
| air pressure | force exerted by the force of air above |
| wind speed | what the coriolis effect is proportional to |
| wind vain | measures wind direstion |
| geostrophic | winds that are unaffected by friction from the earths surface |
| jet stream | fast moving river of air that moves weather |
| anticyclone | high pressure center |
| westerlies | prevailing winds that affect most of the US |
| coriolis | apparent deflective force of earth's rotaion |
| counter-clockwise | dirction that an anticyclone rotates in the southern hemisphere |
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