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28 Cards in this Set
- Front
- Back
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Evaporation
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changing of a liquid to a gas
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Transpiration
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process by which plants give off water vapor into the air
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humidity
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Amount of water vapor in the air.
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Capacity
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amount of material something can hold
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Saturated
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filled to capacity
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specific humidity
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Actual amount of water in the air.
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Relative Humidity
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amount of water vapor in the air compared with the amount of water vapor the air can hold at capacity
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Condensation
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changing of a gas to a liquid
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Dew Point
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temperature to which air must be cooled to reach saturation
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frost
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Ice formed from condensation below the freezing point in water.
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Cirrus
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light, feathery cloud
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Cumulus
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big, puffy cloud
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Stratus
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sheetlike cloud that forms layers across the sky
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precipitation
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Water that falls to Earth from the atmosphere.
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Rain gauge
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device used to measure rainfall
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Air mass
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large volume of air with abou the same temperature and amount of moisture throughout
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Polar air mass
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air mass that forms over cold regions
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tropical mass
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Air mass that forms over warm regions.
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Front
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boundary between air masses of different densities
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Cold Front
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forward edge of a cold air mass, formed when a cold air mass pushes under a warm air mass
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warm front
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Forward edge of a warm air mass, formed when a warm air mass pushes over a cold air mass.
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Thunderstorms
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storm with thunder, lightning, and often heavy rain and strong winds
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Tornado
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small, very violent funn-shaped cloud that spins
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Hurricane
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tropical storm with very strong winds
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Station model
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Record of weather information at a weather station.
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Millibar
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unit of measurement for air pressure
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Isobar
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line on a weather map that connects points of equal air pressure
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Isotherm
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line on a weather map that joins places that have the same temperature
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