| Term | Definition |
|---|---|
| air mass | a large body of air that has the same temperature and level of humidity throughout |
| air pressure | the weight of the air in an area |
| barometer | weather instrument used to measure air pressure |
| climate | the average weather conditions of an area over a very long period of time |
| condensation | the changing of a substance from a gas to the liquid state |
| cumulus | clouds of middle altitude, large, puffy, and sometimes creative shapes |
| polar zone | characterized by a frigid climate with harsh winter temperatures , located near the Earth's polar regions |
| run-off | rain that lands on top of a mountain, travels down to lower ground and joins larger bodies of water |
| troposhere | layer of the atmosphere closest to the earth, all weather happens here |
| valley breeze | the movement of air created by the warm air rising and flowing up the slope of a mountain |
