Collaborative earth science groups create a working model of a watershed. Once it has been developed, you come along and introduce a change in land use, impacting the quality of water throughout their watershed. Model making is an...

A website links you to several water cycle worksheets geared toward an upper elementary or middle school level. Diagrams, word search, crossword, and fill-in-the-blank worksheets are available. As an added bonus, there are links to...

Written as field trip preparation to Gateway National Recreation Area, this resource is also appropriate for any class that is studying the impact of human activity on the environment. During the first activity, learners identify...

Students are able to describe the importance of wetland vegetation. They describe the impacts human activities have on water systems. Students compare and contrast the effect of different soil types on water filtration.

Students elicit data on the water cycle, ocean topography, and island formation in this six lesson unit. The ocean floor and the properties of water are examined through a variety of discussions and hands-on experiments.

Students examine how mining and other industry operations can lead to acid runoff.  In this mining lesson students study weathering and complete a lab on it. 

Students examine how a sanitary landfill is constructed, how it functions, and how waste and leachate affects the areas around the landfill. After a discussion about landfills and leachates, students construct a Sanitary Landfill Model...

Learn about the different stages of the Earth's water cycle, and about processes involving water, including runoff, infiltration, and the differences between hard and soft water.

This interactive tutorial discusses the flow of water on the surface and below the surface. You will learn about the causes and actions of wind, and how water and wind move sediment.

This US Geological Survey site briefly discusses the basics of why pesticides are increasingly found in our ground water. Click Home to access the site in Spanish.