| A | B |
|---|
| climate | the average weather conditions of an area over many years |
| precipitation | rain, snow, sleet, freezing rain |
| atmosphere | the layer of gases that surrounds the earth |
| polar climate | a climate with an average daily temperature below 10 degrees celcius |
| tropical climate | a climate with an average daily temperature above 18 degrees celcius |
| temperate climate | a climate with an average summer temperature above 18 degrees celcius and an average winter temperature below 10 degrees celcius |
| water vapor | water in the gas state |
| humidity | the amount of water vapor in air |
| current | a stream of water that flows within a larger body of water |
| elevation | height above sea level |
