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Flora - Atmosphere

Chpt. 19 Air Pressure & Wind

QuestionAnswer
the force exerted by the weight of a column of air above a given point air pressure
the swift (120-140 km per hour) high-altitude winds jet stream
the apparent deflective force of Earth's rotation on all free-moving objects, including the atmosphere and oceans (deflection to right in Northern Hemisphere and to left in Southern Hemisphere) Coriolis Effect
an instrument that measures atmospheric pressure barometer
the amount of pressure change occurring over a given distance (closely spaced isobars = a steep pressure gradient and high winds) pressure gradient
a low-pressure center characterized by a counterclockwise flow of air in the Northern Hemisphere cyclone
seasonal reversal of wind direction associated with large continents, especially Asia (heat from land during summer causes air to rise, producing a low-pressure system that pulls in moist air from the ocean) (high pressure over land pushes air out to sea) monsoon
2 belts of wind that blow almost constantly from easterly directions and are located on the north and south sides of the subtropical highs trade winds
winds that blow from the polar high toward the subpolar low polar easterlies
a high-pressure center characterized by a clockwise flow of air in the Northern Hemisphere anticyclone
the stormy frontal zone separating cold air masses of polar origin from warm air masses of tropical origin polar front
the dominant west-to-east motion of the atmosphere that characterizes the regions on the poleward side of the subtropical highs westerlies
a wind that consistently blows from one direction more than from another prevailing wind
the name given the periodic warming of the ocean that occurs in the central and eastern Pacific El Nino
an instrument used to determine wind speed anemometer
Created by: sflora
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