| A | B |
|---|
| atmoshpere | the layer of air that surrounds the Earth |
| air pressure | the weight of the air, measured with a barometer |
| humidity | a measure of the amount of water in the air, measured by a hygrometer |
| precipitation | any form of water that falls from clouds, such as rain or snow |
| evaporation | the process of liquid water changing to water vapor |
| condensation | the process of water vapor turning back into liquid drops of water |
| local winds | winds dependent on local changes in temperature |
| prevailing winds | global winds that blow constantly from the same direction |
| air mass | a large body of air which has nearly the same temperature and humidity thoughout |
| front | the boundary between two air masses |
| climate | the average of all weather conditions through all seasons over a period of time |
| microclimate | the climate of a very small area |
| El Nino | a short-term climate change |
| greenhouse effect | process by which the Earth's atmosphere absorbs heat |
| global warming | the hypothesized rise in Earth's average temperature from excess carbon dioxide |
