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"Geology Labs On-Line was initiated in 1999 to develop Web-based activities which enhance the learning and teaching of earth science from middle school through college classrooms. With these activities, students complete a sequence of tasks that require observation, measurement, and data analysis. Upon successful completion, they receive a personalized certificate. "

"The truth is that no one knows for sure though there are some pretty good guesses. The chances are that a number of processes combined to create the views that you see in todays Grand Canyon. The most powerful force to have an impact on the Grand Canyon is erosion, primarily by water (and ice) and second by wind. Other forces that contributed to the Canyon's formation are the course of the Colorado River itself, vulcanism, continental drift and slight variations in the earths orbit which in turn causes variations in seasons and climate. "

Luray Caverns Web site hosts an education section that includes cave science, images, and activities.

A field trip created with TourMaker guides you through a sequence of Web pages on any given topic. For each page, there is simultaneous commentary in an accompanying frame. You move forward and back through the Field Trip using the tour Control Panel and you can leave the Tour to explore links and return to it whenever you want.

"Welcome to FEMA for Kids! I'm Herman, the spokescrab for the site. This site teaches you how to be prepared for disasters and prevent disaster damage. You can also learn what causes disasters, play games, read stories and become a Disaster Action Kid. And don't forget to learn about FEMA. A story about my search for a disaster-proof shell is great reading, too!"

"A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. When pressure builds up, eruptions occur. Gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Eruptions can cause lateral blasts, lava flows, hot ash flows, mudslides, avalanches, falling ash and floods. Volcano eruptions have been known to knock down entire forests. An erupting volcano can trigger tsunamis, flashfloods, earthquakes, mudflows and rockfalls. "

"UPSeis (pronounced "up size") is a program created to teach young people (and not-so-young people) more about the planet we live on and how it works. The UPSeis program is divided into two parts: this web site and a school program. In the UPSeis web site, we'll be talking mostly about the science of seismology and earthquakes: where they happen, why they happen, and what kinds of problems they cause. We'll tell you things you may already know and some stuff you may have never thought about."

Information about earthquakes from the USGS.

"View these animations that will show you how the three different kinds of rocks are formed by clicking on different areas of this picture."

"Earthquakes are the shaking, rolling or sudden shock of the earth's surface. Earthquakes happen along "fault lines" in the earth's crust. Earthquakes can be felt over large areas although they usually last less than one minute. Earthquakes cannot be predicted -- although scientists are working on it! "

The American Museum of Natural History is one of the world's preeminent scientific and cultural institutions. Since its founding in 1869, the Museum has advanced its global mission to discover, interpret and disseminate information about human cultures, the natural world and the universe through a wide-ranging program of scientific research, education and exhibition.