| A | B |
| runoff | moving water like rivers and streams |
| accumulation | not moving water like puddles, ponds, lakes, and seas |
| evaporation | Water changing from a liquid to a gas |
| transpiration | Evaporation of water from plants |
| water vapor | Water in a gas form |
| condensation | Water vapor (a gas) changing into liquid water or ice |
| sun | powers the water cycle |
| solid | Water that has a definite shape and takes a specific amount of space |
| liquid | Water that has no definite shape and takes up a specific space |
| gas | Water that has no definite shape and takes up any space available. |