| A | B |
| ocean | a large body of salt water |
| fresh water | water that has little or no salt |
| evaporation | the changing of a liquid into a gas |
| condensaton | the changing of a gas into liquid |
| water vapor | water in form of an invisible odorless gas |
| precipitation | droplets of water that form in the atmospher and fall to the ground |
| wawter cycle | the continuous mouvement of water between Earth's surface and the air |
| dam | a berrier tha prevents the normal flow of water |
| groundwater | water beneath the Earth's surface |
| flood | overflow of water from the bands of a body of water onto the land |
| drought | a long period of dry weather |
| pollute | to make dirty or unclean |
| reclamation | making something usable again |
| aqueduct | a pathway built by people to move water long distances |