| A | B |
| Percent of fresh water on earth | 3% |
| most water on earth found | oceans |
| water in the air is called | water vapor |
| what happens when water vapor in the air cools | water vapor condenses |
| Formed when the condensation of water droplets clings to dust particles in the air | clouds |
| The process where water is continually changed and reused | water cycle |
| The process of water returning to the Earth’s surface in form of rain | precipitation |
| the process of water evaporating from the leaves of plantslants | transpiration |
| Water that is infiltrated into underground rocks and soil | ground water |
| Rock and soil that holds much water underground | aquifer |
| The movement of water from the surface to underground | infiltration |
| Heat from the sun causing moisture to escape the surface of the earth and rise | evaporation |
| water that flows over the ground surface rather than soaking into the ground | Runoff |
| the process by which molecules of water vapor in the air become liquid water | Condensation |
| driving force behind water cycle | Sun's heat energy |
| groundwater infiltrates into the soil and dissolves rock causing | caves form |
| most freshwater found | glaciers |
| area on earth for most precipitation | oceans |