| A | B |
|---|
| air pressure | the weight of air |
| atmosphere | the layer of air that surrounds Earth |
| humidity | a measure of the amount of water in the air |
| precipitation | any form of water that falls from cloud, such as rain or snow |
| evaporation | the process by which a liquid changes to a gas |
| condensation | the process by which a gas changes back to a liquid |
| local winds | the winds dependent upon local changes in temperature |
| prevailing winds | the global winds that blow constantly from the same direction |
| air mass | a large body of air that has nearly the same temperature and humidity throught out |
| front | the boundary between air masses |
| climate | the average of all weather conditions through all season over a period of time |
| microclimate | the climate of a very small area |
| El Nino | a short-term climate change that occurs every two to ten years |
| 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 |
