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WatA 4.1

Water in the Atmosphere

TermDefinition
fog Made up of clouds that form near the ground.
vapor Water in the form of a gas.
atmosphere The envelope of gases that surrounds Earth.
water cycle The continual movement of water among Earth’s atmosphere, oceans, and land surface through evaporation, condensation, and precipitation.
evaporation The process by which molecules at the surface of a liquid absorb enough energy to change to a gas.
condensation The change of state from a gas to a liquid.
humidity The amount of water vapor in a given volume of air.
relative humidity The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temperature.
psychrometer An instrument used to measure relative humidity.
Created by: mgershen
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