Weather Science.
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Created by:
scuderia Plus on May 20, 2012
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Description:
Weather science for semester 2 exams.
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43 terms
Terms | Definitions |
|---|---|
 Conduction | direct transfer of thermal energy (heat) from one substance to another by actual contact of molecules the closer molecules, the more heat transferred |
| Convection | the transfer of heat through a fluid (liquid or gas) caused by molecular motion |
| Radiation | energy that is radiated or transmitted in the form of rays or waves or particles |
| Wind | the act of winding or twisting |
| Coroleis efect | The change that earths rotation makes winds curve. |
| Land Breeze | the flow of air from land to a body of water |
| Sea Breeze | a cooling breeze from the sea (during the daytime) |
| Trade Winds | Prevailing winds that blow northeast from 30 degrees north latitude to the equator and that blow southeast from 30 degrees south latitude to the equator |
| Prevailing Westerlies. | winds that blow west to east between 30 and 60 degrees in the northern and southern hemispheres |
| Poler Easterlies | prevailing winds that blow from east to west |
| Doldrums | a belt of calms and light winds between the northern and southern trade winds of the Atlantic and Pacific |
| Hoarse Latitude | Calm areas of falling air. |
| Temperature | the degree of hotness or coldness of a body or environment |
| 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 |
| Saturation | the act of soaking thoroughly with a liquid |
| Thermometer | measuring instrument for measuring temperature |
| Barometer | measures air pressure |
| Anemometer. | a gauge for recording the speed and direction of wind |
| Psychrometer | instrument used to measure relative humidity |
| Air pressure | the result of the weight of a column of air pushing down on an area |
| Evaporation | the process of becoming a vapor |
| Condensation | the process of changing from a gaseous to a liquid or solid state |
| Precipitation | the falling to earth of any form of water (rain or snow or hail or sleet or mist) |
| Runoff | water that flows over the ground surface rather than soaking into the ground |
| Rain | water falling in drops from vapor condensed in the atmosphere |
| Snow | precipitation falling from clouds in the form of ice crystals |
| Sleet | partially melted snow (or a mixture of rain and snow) |
| Hail | precipitation of ice pellets when there are strong rising air currents |
| Cloud | a mass of water vapor in the air. |
| Cirrus cloud | a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles) |
| Cumulus cloud | a puffy cloud that appears to rise up from a flat bottom |
| Stratus cloud | A flat, low-lying cloud that covers sky like a blanket; can produce rain or snow |
| Nimbus cloud | a dark gray cloud bearing rain |
| Air Mass | a large body of air with uniform characteristics horizontally |
| High pressure | an air mass of higher than normal pressure |
| Low pressure | A mass of rising warm air that usually bring wet, stormy weather. |
| Front | (meteorology) the atmospheric phenomenon created at the boundary between two different air masses |
| Cold front | the front of an advancing mass of colder air |
| Warm front | the front of an advancing mass of warmer air |
| Stationary fron | air masses and their boundaries stop advancing |
| Occluded front | a front where a warm air mass is caught between two colder air masses and brings cool temperatures and large amounts of rain and snow |
| Hurricane | a severe tropical cyclone usually with heavy rains and winds moving a 73-136 knots (12 on the Beaufort scale) |
| Tornado | a localized and violently destructive windstorm occurring over land characterized by a funnel-shaped cloud extending toward the ground |
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