Chapter 19 Questions

Chapter 19 Questions - Sara Newell ESC1000 December 7 2009 Chapter 19 Questions 1 Absolute humidity is the mass of water vapor in a given volume of

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Sara Newell ESC1000 December 7, 2009 Chapter 19 Questions 1) Absolute humidity is the mass of water vapor in a given volume of air. Relative humidity is the amount of water vapor in air compared to the amount the air could hold at that temperature. When temperature changes, either warmer or colder, so does the relative humidity. If temperature decreases, relative humidity increases. Because cold air holds less water vapor than warm air holds, the relative humidity increases even though the amount of water vapor remains the same. 2) Air cools when it loses heat by radiation. Air cools by contact with a cool surface such as water, ice, rock, soil or vegetation. Air cools when it rises. 3) When relative humidity reaches 100 percent, the air is saturated. The temperature at which saturation occurs is the dew point. If saturated air cools below the dew point, some of the water vapor may condense into liquid droplets. When the relative humidity reaches 100 percent, water vapor condenses quickly onto solid surfaces such as rocks,
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This note was uploaded on 02/15/2011 for the course ESC 1000 taught by Professor Staff during the Fall '08 term at University of Florida.

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