1. Earth’s Water

2. Water Cycle- regular movement of water.

3. Evaporation- Changing of liquid water into vapor, or gas. Condensation- process of excess water vapor changing into liquid water when warm air cools. Precipitation- Moister that falls to the earth as rain, sleet, hail, or snow.

4. Desalination- The removal of salt from seawater to make it usable for drinking and farming.

5. Groundwater- freshwater which lies beneath the earth’s surface. Aquifer- Underground porous rock layer often saturated with water in the form of streams.