| A | B |
| water cycle (4 parts) | evaportation, condensation, precipitation and storage |
| reservoir | a place where water is stored |
| groundwater | water that soaks into the ground |
| runoff | water that flows across the ground |
| atmosphere | all the air that surrounds Earth |
| water vapor | water as a gas |
| cirrus | high thin clouds made of ice |
| clouds | millions of tiny water droplets, tiny pieces of ice or both ice and water droplets |
| cumulus | thick puffy clouds |
| stratus | clouds that cover all the sky |
| fog | a stratus cloud close to the ground |
| dew | drops of condensed liquid water on grass |
| frost | ice from water vapor that forms on objects on the ground |
| precipitation | moisture that falls from the atmosphere |
| climate | the usual weather year after year |