24.5 weather patterns pg 765-771 – Flashcards
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A large body of air becomes stationary over a region of Earth's surface. Or air moves over a ocean
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How do air masses form?
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cold fronts, warm fronts, stationary fronts,occluded fronts
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What are the four types of fronts?
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cyclones are clouds, precipitation, and stormy weather anticyclones are clear skies, very little precipitation, and calm conditions
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What types of weather are associated with cyclones and anticyclones?
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thunderstorms form when colums of air rise within a cumulonimbus cloud tornados form when verical cylinder of ratatind air develops in a thunderstorm
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How do thunderstorms and tornadoes form?
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A huge body of air that has similar temperature, humidity, and air pressure at any given height
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air mass
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a sharply defined boundary that forms when two unlike air masses meet
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front
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A front where cold air moves in under a warm air mass.
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cold front
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when warm air mass overtakes a cold air mass
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warm front
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A boundary between air masses that don't move possibly causing rain for several days
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stationary front
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forms when a warm air mass is caught between two cooler air masses
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occluded front
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A swirling center of low air pressure
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cyclone
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A swirling center of high air pressure
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anticyclone
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A small storm often accompanied by heavy precipitation and frequent thunder and lightning
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thunderstorm
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a sudden electrical discharge in the atmosphere
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lightning
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a booming or crashing noise caused by air expanding along the path of a bolt of lightning
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thunder
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small and intense windstorm that takes the form of a rotating column of air that touches the ground
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tornado
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a large tropical cyclone with winds of a least 119 kilometers per hour
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hurricane
