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the water cycle
| Question | Answer |
|---|---|
| water cycle | n the hydrologic cycle, water from oceans, lakes, swamps, rivers, plants, and even you, can turn into water vapor. |
| evaporation | the process of turning from liquid into vapor. |
| humidity | a quantity representing the amount of water vapor in the atmosphere or a gas. |
| relative humidity | the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature. |
| psychrometer | a hygrometer consisting of a wet-bulb and a dry-bulb thermometer, the difference in the two thermometer readings being used to determine atmospheric humidity. |
| dew point | the atmospheric temperature varying according to pressure and humidity below which water droplets begin to condense and dew can form. |
| cirrus | cloud forming wispy filamentous tufted streaks (“mare's tails”) at high altitude, usually 16,500–45,000 feet 5–13 km) 2. |
| cumulus | a cloud forming rounded masses heaped on each other above a flat base at fairly low altitude. |
| stratus | cloud forming a continuous horizontal gray sheet, often with rain or snow. |