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Chapter 13 Vocab


Air-Mass Thunderstorm When air rises because of unequal heating of earth's surface within one air mass
Mountain Thunderstorm When air mass rise by orographic lifting, which involves air moving the side of a mountain
Sea-Breeze Thunderstorm Local air- mass thunderstorms that occur because land and water store and release thermal energy differently
Frontal Thunderstorms Produced by advancing cold fronts and more rarely warm fronts
Stepped leader The channel of partially charged air
Return Stroke When the stepped leader nears the ground, a branched channel of positively charged particles
Supercells Self-sustaining, extremely powerful storms
Downbursts Violent downdrafts that are concentrated in a local area
Tornado A violent, whirling column of air in contact with the ground
Fujita Tornado Intensity Scale Ranks tornados according to thier path of destruction,wind speed,and duration, is used to classify tornadoes
Tropical Cyclones Low-pressure tropical storms
Eye Center of the Storm
EyeWall A tall band of strong winds and dense clouds that surrounds the eye
Saffir-Simpson hurricane Scale Classifies hurricanes according to wind speed, potential for flooding in terms of the effect on the height of sea level, and potential for property damage
Storm Surge When Hurricane-force winds drive a mound of ocean water toward coastal areas where it washes over the land
Droughts Extended periods of well-below average rainfall
Heat Waves Extended periods of above average temperatures
Cold Wave An extended period of below-average temperature
Windchill Index The effects of cold air on the Human body are magnified by wind
Created by: Deonna2014