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19 Cards in this Set
- Front
- Back
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absolute humidity
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The mass of water vapor in each cubic unit of air
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calorie
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The energy absorbed when the temperature of 1 gram of water increases 1 Celsius degree (ESRT)
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cloud
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A large body of tiny water droplets or ice crystals
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cloud-base altitude
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The height at which rising air begins to form clouds
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condensation
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The process by which a substance changes from a gas to a liquid ( ESRT)
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condensation nuclei
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Tiny particles of solids suspended in the air on which water condenses to form clouds
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dew
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Liquid water that forms by condensation on cold surfaces
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dew-point temperature
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The temperature to which air must be cooled to become saturated with moisture (ESRT)
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evaporation
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The process by which a substance changes from a liquid to a gas
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freezing
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The change in state from liquid to solid
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frost
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Ice crystals that form when water vapor comes in contact with surfaces whose temperature is below 0 degree Celsius
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hygrometer
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An instrument used to measure atmospheric humidity
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lake-effect storms
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Precipitation events that occur downwind from large lakes as the result of moisture that enters the air over the lake; especially common as early winter snow events
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melting
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The change in state from solid to liquid ( ESRT)
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phase of matter
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The states of matter - solid, liquid, and gas
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psychrimeter
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An instrument, made up of two thermometers mounted side-by-side on a narrow frame, that is used to determine the dew-point temperature and relative humidity; also known as a wet and dry bulb thermometer (ESRT)
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specific heat
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The energy needed to raise the temperature of 1 gram of a substance 1 Celsius degree (ESRT)
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transpiration
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The process by which plants release water vapor to the atmosphere, largely through pores in their leaves
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vaporization
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The change in state from liquid to gas ( vapor) at any temperature (ESRT)
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