| A | B |
|---|
| water vapor | water in the form of gas |
| water cycle | the process of water going from the oceans to the air to the ground and back to the oceans |
| evaporation | heat from the sun changes liquid water into water vapor |
| condensation | water vapor turns into liquid as a result of cooling |
| precipitation | water in the form of rain, snow, sleet or hail drops to the ground |
| collection | water collects in rivers lakes and oceans |
| glacier | a giant sheet of ice |
| groundwater | water that fills cracks and holes in the rock layers below the surface of the earth |
| aquifer | underground rock layers that water flows through |
