This site provides information on glaciers from around the world. Its two-page fact sheet can be downloaded as a PDF file.

Types of volcanic eruptions are named after actual volcanoes. View the eruptions of these volcanoes.

Learn about the many different energy resources available from our Earth. Find out the pros and cons of each type: both renewable and nonrenewable.

Learn about geologic time, including the age of the Earth by putting it in terms of pages in a book.

Students learn about glacial and volcanic features by examining and comparing bathymetric and topographic images of the Sand Point area of Alaska.

[Free Registration/Login may be required to access all resource tools.] Discover how scientists learn about Earth's interior using seismic waves, meteorites, density, and the magnetic field. Additional resources are available for download.

[Free Registration/Login may be required to access all resource tools.] Presents the way geothermal energy is harnessed and some of its benefits and costs. Downloadable resources are also available.

Four animations showing the movements of surface waves and body waves that are created by earthquakes. Includes P, S, Rayleigh, and Love waves.

This resource explains how ice cores are used to analyze past events like air pollution, volcanic activity, climate changes, and radioactivity.

Basic definitions and characteristics of the different wave types, diagrams, and speeds of the waves. Has links to information on seismology, earthquakes, and plate tectonics.

Find out how sustainability plays a role in the goal of global energy efficiency.

A 34-page report examining renewable energy sources in use in Texas. It looks at how Texas compares with the rest of the world, the companies investing in the Texas energy industry, the Texas electricity grid, government initiatives,...

This article discusses research on the accuracy of radiocarbon dating. It was determined that the standards used for radiocarbon dating may be flawed due to variations to the radiocarbon cycle in different climatic regions of the world....

Easy-to-understand information and a colorful diagram on the underground and surface mining methods used for extracting coal.

Visualize the propagation of seismic waves from historic earthquakes through Earth's interior and around its surface.

A beginner's lesson to the structure of the elements. Quiz yourself on the basics of atomic structure for some of the common elements.

Explains the importance of index fossils for the dating and chronology of events in the fossil and geological records. Discusses uses and examples of index fossils in the Cenozoic, Mesozoic, and Paleozoic Eras.

Informational site provides illustrated tutorial of light reflection. Also discusses the law of reflection.

Briefly describes how gold and diamonds came to be deposited in the streams of Indiana.

Explains how loess came to be deposited over much of Indiana by the melting of glaciers during the Ice Age.

Learn about the different types of igneous rocks and how they are classified.

Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the...

Provides the definition of alternative energy and how it differs from the definition of renewable energy. Includes a list of links to some excellent resources.

Explains what the forces are that cause glaciers to move, what their movement looks like, how they advance and retreat, or even surge forward.