Weather Part II (2)
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Created by:
Bobothedolphin on May 18, 2012
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Description:
Weather Part Two
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22 terms
Other / Unknown | Spanish |
|---|---|
| Precipitation |  The falling to earth of any form of water (rain or snow or hail or sleet or mist.) |
| Latent Heat | Heat absorbed or radiated during a change of phase at a constant temperature and pressure. |
| Evaporation | The process by which water changes from liquid form to an atmospheric gas. |
| Condensation | The process of changing from a gaseous to a liquid or solid state. |
| Deposition | The change of state from a gas directly to a solid. |
| Humidity | The amount of water vapor in the air. |
| Saturated | Being the most concentrated solution possible at a given temperature. |
| Relative Humidity | The ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature. |
| Dew Point | The temperature at which the water vapor in the air becomes saturated and condensation begins. |
| Psychrometer | Instrument used to measure relative humidity. |
| Dry Adiabatic Rate | The rate of adiabatic cooling or warming in unsaturated air; the rate of temperature change is 1°C per 100 meters. |
| Wet Adiabatic Rate | The rate of adiabatic temperature change in saturated air; the rate of temperature change is variable, but it is always less than the dry adiabatic rate. |
| Orographic Lifting | Cloud formation that occurs when warm moist air is forced to rise up the side of a mountain. |
| Frontal Wedging | Lifting of air resulting when cool air acts as a barrier over which warmer, lighter air will rise. |
| Convergence | The occurrence of two or more things coming together. |
| Convective Lifting | Weather process where the sun heats the land surface, which heats the adjacent air, and then the heated air rises. |
| Front | The atmospheric phenomenon created at the boundary between two different air masses. |
| Thermals | Column of air rising in lower altitudes of Earth's atmosphere. |
| Stable Air | Air that resists vertical displacement; if it is lifted, adiabatic cooling will cause its temperature to be lower than the surrounding environment; if it is allowed, it will sink to its original position. |
| Unstable Air | Air that does not resist verticle displacement; if it is lifted, its temperature will not cool as rapidly as the surrounding environment, and so it will continue to rise on its own. |
| Temperature Inversion | Atmospheric condition in which warm air traps cooler air near the earth's surface. |
| Condensation Nuclei | Microscopic particles on which water vapor condenses to form cloud droplets. |
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