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15 Cards in this Set
- Front
- Back
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Evaporation
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the process by which water molecules in liquid water escape into the air as water vapor
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Condensation
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the process by which molecules of water in the air become liquid water
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Dew Point
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the temapture at which condemsation begins
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Cumulus
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clouds that form less than 2 km above the ground and look like fluffy, rounded piles of cotton
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Stratus
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clouds that form in flat layers
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Cirrus
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wispy, feathery clouds made mostly of ice crystals that form at high levels, above 2 km
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Humidity
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a measure of wator vapor in the air
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Relative Humidity
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the percentage of wator vapor in the air compared to the maximum amomunt of the air could hold at that tempature
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Psychrometer
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an instrument used to measure relative humidity, consisting of a wet-bulb and a dry-bulb thermometer
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Precipitation
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any form of wator that falls from clouds and reached Earth's surface
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Drought
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long periods of low precipitation
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Storm
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a violent disturbance in the atmosphere
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Lightning
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a sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud or between a cloud and the ground
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Tornado
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a rapidly whirling, funnel-shaped clound that reaches down to touch Earths surface, usually leaving a destuctive path
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Hurricane
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a tropical storm that has winds of 119km/hr or higher; typically about 600km across
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