This page discusses the presence of arsenic (chemical symbol As) in ground water in the United States. Also provides many links to other sites about arsenic (especially in drinking water.)
Excellent information provided by the U.S. Geological Survey.
A listing of all sorts of available reports on bismuth. Great resources for students at many levels.
The U.S. Geological Survey sponsors this site about the history of earthquakes in the United States as well as information about how earthquakes are detected and measured.
This site has everything you might want to know about surface water and things you probably didn't even imagine! Click Home to access the site in Spanish.
A site containing a description of basic Eolian (wind) processes and how they effect various types of terrain. Includes many pictures which illustrate the presented concepts.
This resource has a topographic map that tells you where things are and how to get to them. Use this site to help you use a map and compass to determine your location.
This large U.S. Geological Survey site offers a look at the age of the earth, how radiometric dating is used to calculate it, the major divisions of geologic time, and the classification and use of fossils.
A discussion of geologic time, how scientists use the concept, and how they have determined its span.
Wells are extremely important to all societies. Find out how wells are dug today and peruse the list of the different types of wells and the methods used to dig them. Click Home to access the site in Spanish.
A massive amount of information about groundwater. Topics covered include groundwater basics, humans and groundwater, groundwater quality, and its place in the water cycle. Includes true-and-false quiz and a Q&A section, as well as a large gallery of photographs, maps, and helpful illustrations. There are also links to data and tools.
What is groundwater? Where does it fit into the water cycle? With the aid of a simple illustration, one is able to learn more about this topic. Includes link to a true-and-false quiz.
This is an online book about Hawaiian volcanoes. You can learn about the past, present and future of the Hawaiian volcanoes.
Learn more about the hot spot theory developed in 1963 by the Canadian geophysicist J. Tuzo Wilson. Diagrams help you visualize the way hot spots formed geologic structures such as the Hawaiian Islands.
The USGS gives an overview of the amount of water on Earth and where it is located. It gives a few interesting facts about the Earth's supply of water. Click Home to access the site in Spanish.
This is a comprehensive website featuring how to build a model that illustrates sea-floor spreading and subduction. It has diagrams and pictures reviewing major geological concepts.
Check out this animated site of a hydroelectric generator. There is a picture of a real generator along with a description of how it works.
This is a website to learn not only about the inner and outer core, but also about the crust and the mantle of the interior of the earth.
Download a movie about the 1982 landslides of the San Fransisco Bay Area. Shows many devastating stories, scientific discoveries, and the destruction the landslides caused. [58:27]
Discusses the problems associated with landslides, where they occur, and why they occur.