Weather Test
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23 terms
Terms | Definitions |
|---|---|
 Precipitation | any form of water that falls from a cloud |
| melting | be in solid state and become a liquid |
| freezing | to be in liquid for and become a solid |
| evaporation | converting a liquid to a gas |
| condensation | the change of state from a gas to a liquid |
| sublimation | the conversion of a solid directly to a gas without passing through the liquid state |
| deposition | process of which and agent erosion loses energy and drops the sediment it is carrying also by which water vapor is changed to a solid without passing through a liquid state |
| humidity | general term referring to water vapor in the air but no to liquid droplets of fog, cloud, or rain |
| latent heat | the energu absorbed or released during a change in state |
| saturated | the state of air that contains the maximum quantity of water vapor that it can hold at any given temperature and pressure |
| relative humidity | the ratio of the air's water-vapor content to its water vapor capacity |
| dew point | the temperature to which air has to be cooled in order to reach saturation |
| dry adiabatic cooling | the rate of adiabatic cooling or warming in unsaturated air; the rate of temperature change is 1 degree celcius per 100 meters |
| wet adiabatic rate | the rate of adiabatic temperature change is variable, but it is always less than the dry rate |
| middle latitude cyclone | cause of most stormy weather |
| air pressure | the force exerted by the weight of a column of air above a given point |
| Coriolis Effect | deflective force of Earths rotation on all free-moving objects including the atmosphere and oceans right of the Northerm Hemisphere and Left of the Southern Hemisphere |
| Barometer | an instrument used to measure atmospheric pressure |
| Isobars | Meteorology . a line drawn on a weather map or chart that connects points at which the barometric pressure is the same. |
| jet streams | 120-240 kilometers per hour high altitude winds. |
| cyclones | a low-pressure center characterized by a counter clockwise flow of air in the Northern Hemispehere |
| Anticlones | a high pressure center characterized by clockwise flow of air in the northern hemisphere |
| monsoons | seasonal reversal of wind direction Asia; winter, the wind blows from land to sea. In summer the wind blows from sea to land |
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