Lab 7A - Lab 7A 1.A mass of cold dry air is a mass of warm...

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Lab 7A 1.A mass of cold, dry air is ________ a mass of warm, humid air. Consequently, warmer (lighter) air is often forced to rise above the sloping frontal surface overlying colder (denser) air. [X ]denser than [ ]not as dense as 2.Ascending unsaturated (clear) air ________, cooling at about 10 Celsius degrees per 1000 meters of ascent (5.5 Fahrenheit degrees per 1000 feet). [ X]expands [ ]is compressed 3.The warmer air rising above the frontal surface expands and cools as it ascends, and its relative humidity ________. If saturation is achieved, clouds develop and from those clouds, rain or snow may fall. [X ]increases [ ]decreases 4.The relative humidity of saturated (cloudy) air is ________. [ ]50% [ ]98% [ X]100% [ ]105% 5.Clouds (and perhaps precipitation) can develop in the ascending branch of a convection current, along a front, and up the windward slopes of a mountain range. The ascending branch of a convective current may produce an upwardly billowing cloud known as a ________ cloud. [ X]cumulus [ ]stratus [ ]cirrus 6.Prevailing winds blow from west to east across most of North America. Winds that
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