| A | B |
|---|
| air temperature | determines make up of clouds |
| air pressure & temperature, water vapor | affect cloud formation |
| cirrus | thin, white wispy, very high altitude |
| thunderheads | vertical, rising air, very high altitude |
| altocumulus | small, puffy balls, white tops |
| stratus | dark, cover sky, low altitude |
| fog | ground level cloud |
| rain | ice crystals melt on way down |
| freezing rain | freezes when lands |
| sleet | rain freezes on the way down |
| snow | ice crystals all the way down |
| hail | upward winds blow raindrops back into clouds |
| air temperature below cloud | determines type of precipitation |
| 75% | oceans coverage of Earth |
| rivers | deliver salt to oceans |
| hydrosphere | all waters of Earth |
| salinity | how salty water is |
| wind | causes ocean currents |
| 3% | fresh water on earth |
| aquifer | rock and soil that holds water underground |
| water table | top level of aquifer |
| rivers, lakes, streams | surface water |
| 70% | frozen fresh water |
| watershed | area of land that drains into specific river |
| chlorine & flouride | chemicals added to water to clean and protect teeth |
| water vapor | water as an invisible gas |
| condensation | water vapor returns to liquid form |
| water cycle | water changing from one form to another |
| precipitation | rain, snow, sleet, hail, freezing rain |
| sublimation | ice to vapor without melting first |
| ice getting smaller in freezer | example of sublimation |
| water drops on outside of cold drink | example of condensation |
| sun | provides energy for water cycle |
| steps in water cycle | evaporation, condensation, precipitation, run-off |
| frost | water vapor turns to ice crystals on surfaces |
| reservoir | artificial lake behind a dam |
| dew | formed by condensation |
| ice crystals | form most clouds |
| clouds | form as air moves higher to area of less pressure |
