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Lab 15 front learning (definition of different air masses (continental…
Lab 15 front learning
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air masses
definition
a body of air with horizontally uniform temperature, humidity, and pressure.
formation
Air masses are formed when air stagnates for long periods of time over a uniform surface. The characteristic temperature and moisture of air masses are determined by the surface over which they form. An air mass acquires these attributes through heat and moisture exchanges with the surface.
The fronts
stationary front
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it makes clouds and fog form, and it may rain or snow
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cold front
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it can last, again, hours even days
it brings a sudden drop in temperature, and heavy rain, sometimes with hail, thunder, and lightning
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