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17 Cards in this Set
- Front
- Back
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WEATHER
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the condition of the atmosphere at a certain time and place
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AIR MASS
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a huge body of air that has similar temperature, pressure, and humidity throughout
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FRONT
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the place where two air masses meet
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COLD FRONT
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the leading edge of COLD air mass that forms as the COLD air mass MOVES into a WARM air mass
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WARM FRONT
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the leading edge of a WARM air mass that forms as the WARM air mass moves forward into a COLD air mass
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STATIONARY FRONT
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when cold and warm masses meet, but neither one has enough force to move the other
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OCCLUDED FRONT
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a WARM air mass that is caught between two COOLER air masses, forcing the warm air UPWARD, causing the temperature at the ground to become cooler
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CYCLONE
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a swirling center of LOW air pressure
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ANTICYCLONE
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a HIGH pressure center of DRY air
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STORM
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a violent disturbance in the atmosphere
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TORNADO
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a rapidly whirling, funnel shaped cloud that reaches down from a storm cloud to touch the Earth's surface, usually leaving a destructive path
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HURRICANE
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a tropical storm that has winds of 119 kmph or higher; typically about 600 km across
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HUMIDITY
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the amount of WATER VAPOR in the air
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HYGROMETER
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a tool that measures humidity
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RAIN GAUGE
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an instrument used for measuring precipitation
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TEMPERATURE
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the measure of the amount of HEAT ENERGY in the atmosphere
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DROUGHT
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a PERIOD OF ABNORMALLY DRY WEATHER that lasts long enough to produce serious damage
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