| A | B |
|---|
| hydrosphere | the sum of all water on a planet |
| hydrologic cycle | process by which water is continuously exchanged between earth's various water sources |
| transpiration | evaportation of water from plants |
| condensation | process by which a gas turns into a liquid |
| precipitation | water falling from the atmosphere as rain, snow, sleet, or hail |
| distillation | evaporation and condensation of a mixture to separate out the mixture's individual components |
| residence time | the average time a given particle will stay in a given system |
| salinity | a measure of the mass of dissolved salt in a given mass of water |
| firn | a dense, icy pack of snow |
| water table | the line between the water-saturated soil and the soil that is not saturated with water |
| percolation | the process by which water moves downward in the soil, toward the water table |
| adiabatic cooling | cooling of a gas that happens when the gas expands with no way of getting more energy |
| cloud condensation nuclei | small airborne particles upon which water vapor condenses to form clouds |
