click below
click below
Normal Size Small Size show me how
Voc.BK2 Ch. 3:1
| word | definition |
|---|---|
| altitude | the distance above sea level |
| convection | the transfer of energy from place to place by the motion of heated gas or liquid |
| evaporation | the process by which liquid changes into gas |
| relative humidity | the comparison of the amount of water vapor in air with the maximum amount of water vapor that can be present in air at that temperature |
| air mass | a large volume of air that has mearly the same temperature and humidity at different locations at the same altitude |
| front | the boundary between air masses |
| high-pressure system | a generally scalm and clear weather system tat occurs when air sinks doen in a high-pressure center and spreads out toward areas of lower pressure and it nears the ground |
| low-pressure system | a large and often stromy weather system that occurs when air moves around and into a low-pressure center, then moves up to highter altitudes |