Glossary-

• PERCOLATION - Movement of water through the ground.

• RUNOFF - Rainwater that has traveled over the ground picking up pollutants as it moves towards a larger water body.

• AQUIFER - A large water source under the ground.

• EVAPORATION - Vapor created when the sun heats water in lakes, streams, rivers, or oceans.

• TRANSPIRATION - Vapor created when plants and trees give off moisture.

• SUN - Provides energy for the never-ending cycle.

• CONDENSATION - Tiny droplets of water formed when water vapor rises into the air and cools.

• PRECIPITATION - Moisture released from the clouds in the form of rain, snow, hail, etc.