ASTRON 105 Study Guide - Evaporation, Thunderstorm, Fluid Parcel

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18 Jan 2014
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*relative humidity is: temperature dependent, may be substantially different than humidity in a house, usually higher at night than day, a measure of the content of water vapor compared to capacity of an air sample, all of the above. *the most important process for cloud formation in the atmosphere is: cooling by expansion of air *sinking or subsiding air cannot form clouds due to: warming temperatures. *dew point is the temperature at which water vapor in the air begins to condense, the temperature inside a cloud would therefore be: about equal to dew point. *during the process of adiabatic cooling, the temp decreases b/c the air has: expanded to large volume. *an adiabatic process is one in which the: heat exchanged with the surroundings is zero. *evaporation is a process which tends to keep temperatures cooler where it occurs. This is b/c evaporation: uses energy to change the phase of water instead of warming it.

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