Natural Disasters test 3 (atmosphere and severe weather)_1

Natural Disasters test 3 (atmosphere and severe weather)_1...

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Term: downbursts Definition: -small area of rapidly descending air beneath a thunderstorm which causes damaging winds greater than 150 mph. (greatest threat to aircrafts) Term: tornado warning vs tornado watch Definition: warning: issued when tornado has actually been sighted or picked up on radar watch: just tells people to lookout for possible tornado Term: SuperTuesday 2008 Tornado Definition: -occured on election day -large strom caused series of tornadoes to stay on the ground longer than usual Term: Adiabatic process Definition: -process where no heat is transfered (verticle flow of air in atmosphere) *warm air holds more moisture than cold air and rises as it expands, but heat content remains the same *cold air will compress and sink, but heat content remains the same
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Term: April 3, 1974 "Superoutbreak" Definition: -148 tornadoes across 13 states -17 hours long, killed 315 ppl, 5484 injured Term: May 3, 1999 Oklahoma tornado outbreak Definition: -18 tornadoes cut path through city -estimated trajectory of six, 700 lb I-beams Term: lightning Definition: -forms when + and - charges connect within a storm -leading cause of forest fires Term: single cell Definition: not tornadoes, cloud verticle
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