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Meteorology
earth science regents review
| Question | Answer |
|---|---|
| air mass | a large body of air with similar characteristics throughout it |
| mT comes from | gulf of Mexico |
| cP comes from | canada |
| arctic air mass is... | extremely cold |
| why is there no maritime arctic air mass? | arctic air masses are too cold to hold moisture |
| in air masses what do k and w stand for | k- cooling w- warming |
| a front | a boundary between air masses |
| when would an occluded front occur? | a cold front catches up to a warm front, then the two cold air masses push the warm one up. |
| how do you tell the movement of a front? | they move in the direction the symbols point |
| cold front | cool air forces warm air to rise |
| warm front | warm air is forced over cold air |
| cold front characteristics | moves fast, severe thunder storms |
| warm front characteristics | moves slow, showers that last all day |
| dew point | temperature when condensation begins |
| relative humidity | percent of moisture in air relative to the amount it could hold. |
| when air temp= dew point relative humidity is | 100% |
| what is needed for clouds to form | water vapor, condensation surface, temp at dew point |
| + temperature= ____ relative humidity | lower |
| highest humidity when? | morning+ evening |
| + water vapor content= ___ relative humidity | higher |
| condensation nuclei | tiny solid particles that provide a surface for condensation |
| aerosols | condensation nuclei removed from the atmosphere during precipitation |
| adiabatic cooling | air rises, expands, and cools |
| what causes wind | unequal areas of pressure or heat |
| on the cost during the day people experience a | sea breeze |
| on the cost during the night people experience a | land breeze |
| why don't winds blow directly to the equator | Coriolis effect |
| winds reflect to the______ in the north | right |
| high pressure moves | clockwise and out |
| low pressure system moves | counter- clockwise and in |
| when was the big bang | 13.7 billion years ago |
| what was earths first atmosphere like | mostly carbon dioxide and methane |
| where did earths first gasses come from | mainly volcanic eruptions (and outgassing) |
| what is out gassing | the removing of gasses from cracks in earths surface |
| oxygen first entered the atmosphere from | Cyanobacteria and Stromolites |
| what measures air pressure | barometer |
| + altitude= ____ pressure | lower |
| + temp=____ pressure | lower |
| + moisture content= _____ pressure | lower |
| units for temp | *C *F *kelvin |
| humidity and dew point weather instrument | sling psychrometer |
| wind direction instrument | wind vane |
| wind direction is measured on the direction the wind______ | comes from |
| wind speed weather instrument | anemometer |
| precipitation weather instrument | rain gauge |
| where is Coriolis effect the greatest | at the poles |
| weather moves in NY | SW ----> NE |
| cyclones at what system | low pressure |
| what is orographic lifting | when air is forced up by mountains cools, and rains then goes down warms and drys |
| rule for station model barometric pressure | if its over 500 add a 9 if its under 500 ad a 10. Then, add a decimal point before the last number. |
Created by:
HundoOnES
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