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W&C 1.1, 1.2, 1.3

Vocab review

TermDefinition
Weather The condition of earth's atmosphere at a particular time and place.
Atmosphere The layer of gases that surrounds the planet.
water vapor Water in the form of a GAS...NOT steam, which is tiny droplets of LIQUID water.
density The amount of mass in a given volume (D=M/V). In weather, this refers to the amount of mass in a given volume of AIR; the denser the air, the greater the air pressure
altitude or elevation, is the distance above sea level.
air pressure The result of the weight of a column of air pressing down on an area. Air pressure decreases as altitude increases (inverse relationship...one goes up and the other goes down)
wind The horizontal movement of air from an area of high pressure to an area of low pressure. All winds are caused by differences in air pressure.
ozone A form of oxygen that has three oxygen atoms in each molecule instead of three. Ozone layer, located in the stratosphere protects us from ultraviolet radiation.
Properties of air mass, density, volume, pressure
elevation or altitude, is the distance above sea level.
omnidirectional From every direction at once, as in air pressure is omnidirectional.
Created by: bphelan
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