Tambora of Indonesia had one of the deadliest eruptions since 1500. You will learn about the volcano and you can link to other related items.

Mt. Rainier first erupted a million years ago. Find out all about its eruptive history and potential hazards that could threaten people today.

Learn about the history, mass balance and meteorlogical data, and view several photos of the Wolverine Glacier.

This resource provides images of Saturns satellites.

Locate glaciers and ice caps on a world map at this USGS site. Read about the formation of galciers and other interesting facts. Learn about the effects glaciers have on the landscape, and of their importance for our fresh water supplies.

This website offers three activity centers: Questionnaires, Opinion Surveys, and Challenge Questions. Take a look at these interesting water research activities from the US Geological Survey. Click Home to access the site in Spanish.

This resource provides links that overview the history of land use in the United States. Numerous satellite images of different areas are provided.

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...

An introduction, aimed at upper elementary- and middle-school learners, to acid rain. [Click back to home to access the site in Spanish.]

Descriptions, photographs and information on the caterpillar life cycle for the different species of eastern United states caterpillars. Includes details on collecting and photographing specimens.

An in-depth explanation of the Earth's water cycle, including a hyperlinked diagram that provides direct access to information about each phase in the cycle.

Listen to various different types of earthquakes, and compare the sounds of various earthquake events.

This resource provides information about earthquakes, including how they are measured.

A description of the earthquake in Prince William Sound, Alaska in 1964. Links to isoseismal map, earthquake damage photos, and seismogram of the earthquake.

See interactive, 360 degree panoramic photos of the San Andreas Fault. Aerial photos of the fault were taken using a technique called Kite Aerial Photography.

A quick summary of the water cycle that includes a diagram of the cycle, with links to in-depth explanations of each component of the cycle. Click "water-cycle home" to access water-cycle resources in a variety of languages.

An interactive, real-time map showing current earthquakes happening all over the world. Students may choose options for which earthquakes to display by age, depth, magnitude, or intensity.

This is an online book about Hawaiian volcanoes. You can learn about the past, present and future of the Hawaiian volcanoes.

Access, from one index page, to three-dimensional photographs of all U.S. national parks. Standard photographic images and tours and selected geological resources (e.g., stratigraphic maps) for each park can also be linked to from this...

Pictures and text describe the source and appearance of many of the stones used in the buildings and monuments in Washington, D.C. Included are a geologic time chart and an illustrated map of the geologic and geographic features of the...

Heinrich Schliemann is briefly mentioned as part of a larger discussion about the geology of gold. A brief history of the precious metal refers to the gravesites discovered by Schliemann at the ancient city of Mycenae in Greece.

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.

This site, which is provided for by the U.S. Geological Survey, describes the volcanoes in the Cascades.

The U.S. Geological Survey provides information on what a desert is, how the atmosphere influences aridity, where deserts form, types of deserts, desert features, eolian processes, types of dunes, remote sensing of arid lands, mineral...