| A | B |
|---|
| Aquifer | Water stored in geologic formations |
| Infiltration | The process that moves water from the surface of the ground into the soil and rocks below. |
| Water Vapor | Water in the form of a gas. |
| Condensation | The process that makes clouds from water vapor. |
| Evaporation | The process of changing water from a liquid to a gas. |
| Atmosphere | The air all around us. |
| Radiation | A type of energy that can travel through empty space. |
| Runoff | Surface water that flows over land. |
| Transpiration | The process that moves water from the ground to plant roots, up the stems, and out of the leaves as water vapor. |
| Water Cycle | The continuous process by which water moves from Earth's surface to the atmosphere and back. |
