In this lesson, learners will understand that water flows down a slope and determines how watersheds flow. They will also learn that water flows in three basic directions and that each watershed is divided by the area's higher elevations...

[Free Registration/Login may be required to access all resource tools.] Definition of evaporation, how it occurs, what affects its rate and evaporative cooling.

Site provides information on the Earth's atmosphere as well as offers additional information about Earth.

This U.S. Geological Survey website explains the desalinization method used by some communities to change sea water into drinking water. Click Home to access the site in Spanish.

This U.S. Geological Survey website offers one explanation of why the ocean is salty. Click Home to access the site in Spanish.

This U.S. Geological Survey website explains a variety of uses for saline water. Pie graphs and bar graphs are used to illustrate the various uses. Click Home to access the site in Spanish.

Explore these resources to learn more about the natural and engineered processes that can help contribute to improved water quality.

This very basic site is about water -- all kinds of water: rainwater, drinking water, even toilet water. Includes water-themed games. In German.

This online lesson from the Arizona State University teaches students about earth's water cycle yet uses music as a part of the instructional process. Creative and simple. Non-music specialist could easily use the lesson.