| A | B |
|---|
| water cycle | the movement of water from Earth's surface into the air and back to the surface again |
| precipitation | water that falls to Earth as rain, snow, sleet, or hail |
| evaporation | the changing of a liquid into a gas |
| condensation | the changing of a gas into a liquid |
| water vapor | water in the form of a gas you can't see |
| thermal energy | heat |
| groundwater | rain that soaks into soil and rocks |
| estuary | where fresh water mixes with salt water |
