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LATENT HEAT The heat energy that is absorbed or released by a substance during a phase change
SUBLIMATION The process by which a solid changes directly into a gas
DEW POINT The temperature at which the condensation rate equals the evaporation rate
ABSOLUTE HUMIDITY the mass of water vapor contained in a given volume of air
RELATIVE HUMIDITY ratio of the actual water vapor content of the air to the amount of water vapor needed to reach saturation
CLOUD collection of small water droplets or ice crystals in the air
CONDENSATION NUCLES The suspended particles that provide the surfaces necessary for water vapor to condense
ADIABATIC COOLING The process by which the temperature of a mass of air decreases as the air rises and expands
ADVECTIVE COOLING process by which the temperature of an air mass decreases as the air mass moves over a cold surface, such as a cold ocean or land surface
STRATUS CLOUD Clouds that have a flat, uniform base and that begin to form at very low altitudes
CUMULUS CLOUD Low-altitude, billowy clouds that commonly have a top that resembles cotton balls and a dark bottom
CIRRUS CLOUD Feathery clouds that are composed of ice crystals and that have the highest altitude of any cloud in the sky
FOG result of the condensation of water vapor in the air