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W&C 1.1, 1.2, 1.3
Vocab review
Term | Definition |
---|---|
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. |