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22 Cards in this Set
- Front
- Back
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Weather
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What is happening in the atmosphere at a certain time and place.
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Water Cycle
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The continuous movement of water form the surface, to the air, to the ground, etc...in any order
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Humidity
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The amount of water vapor in the air.
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Relative Humidity
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The amount of water vapor in the air compared to how much water vapor the air can hold at a certain temperature.
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Psychrometer
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Instrument used to measure relative humidity.
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Condensation
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Gas (water vapor) becomes a liquid.
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Dew Point
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Temperature at which a gas becomes a liquid.
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Cloud
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Many water droplets and ice crystals that float when the air is cooled and condensation occurs.
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Cumulous
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Fluffy clouds - nice weather.
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Nimbus
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Darker clouds that usually bring rain and storms.
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Stratus
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Clouds that form in layers and can be low.
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Fog
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Very low stratus clouds.
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Cirrus
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High, icy clouds that bring wind.
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Alto
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Middle clouds.
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Precipitation
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Water in solid or liquid form that falls to the Earth.
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Air Mass
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Large body of air with similar temperature and moisture.
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Cold Front
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Cold air moves under the warm air and pushes it up and out of the way.
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Warm Front
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Warm air moves over the cold air and replaces it.
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Occluded Front
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Warm air is caught between two cold air masses. The coldest of the two air masses moves under and pushes the warm air mass up and overtakes the other cold air mass.
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Stationary Front
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Warm and cold air masses meet and don't have enough force to move.
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Cyclone
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Area of low pressure where the air is warm, moves counter-clockwise and moves up. (Rain)
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Anticyclone
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Area of high pressure where the air is cold, moves clock-wise and moves down. (Nice weather)
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