A resource to help understand how volcanoes work and how the can affect their surroundings.

Explains what the four spheres of the Earth are and describes how volcanic eruptions affect the different spheres. Also provides a list of events that are examples of interactions.

Labeled diagram of a volcano during an eruption.

From ABC News in Science, Julie Steenhuysen's article explores the results of ancient volcanic eruptions that caused a warming effect on the Earth and possibly caused the death of certain species.

General information on the Mexican volcano. View graphics of Popocatepetl and learn about the eruption process.

A Wikipedia entry on the Mayon Volcano, the most active volcano in the Philippines. Excellent photos and maps. Includes a log of recent eruptions.

An article outlines the reasons why Vesuvius should be considered the world's most dangerous volcano.

[Free Registration/Login Required] This lesson will take several class periods. This lesson begins to look at how volcanoes are created.

The volcano Krakatau is in Indonesia. Learn about its background information, description, frequently asked questions, items of interest and useful links.

Scientists have determined that the earthquakes preceding volcanic eruptions are different than those that precede earthquakes. Discover the sounds and wave patterns produced by the three different types of volcanic seismic activities.

Students learn about the causes, composition and types of volcanoes. They begin with an overview of the Earth's interior and how volcanoes form. Once students know about how a volcano functions, they learn how engineers predict...

In September 1994, Rabaul volcano on the Papua New Guinean island of New Britain erupted. Very few people were killed due to a well designed evacuation plan. Get the details on the planning that saved thousands of lives.

In 1816, Europe and North America were plagued by heavy rains, odd-colored snow, famines, strange fogs and very cold weather well into June. Though many people believed it to be the apocalypse, this "year without a summer" was actually...

On January 3, 1983, fountains of lava erupted from a fissure on Hawaii's Kilauea volcano, sending rivers of molten rock flowing towards the sea. Nearly 16 years later, the eruption continues with no sign of letting up. This site provides...

A radar image of Mt. Rainier can be seen on this page. Mt. Rainier had its last eruption 150 years ago. Click on this page to find out more info.

Learn about the 74,000 year old eruption of the Toba volcano which produced 670 cubic miles of magma. Compare its' dimensions to other famous eruptions to get an understanding of its enormous dimensions.

The Tungurahua volcano in Ecuador has gone through a series of active and dormant periods. Follow the volcano's activity from 1773 to 2000, including a scene of an explosive eruption in 1999.

[Free Registration/Login Required] An informational text explaining what causes volcanoes to erupt. A question sheet is available to help students build skills in reading comprehension.

30 fun facts are presented to commemorate the 30th anniversary of the 1980 eruptions of Mount St. Helens.

This animation shows the forces that help form stratovolcanoes.

Students can take a virtual tour of a Hawaiian volcano which erupted in 1974. Pictures show plants starting the succession process occurring along a pahoehoe flow.

This lesson explores the impact of volcanic eruptions on the atmosphere. Students will analyze three types of visual information: a graph of aerosol optical depth v. global temperature, a global map with temperature anomalies, and an ash...

[Free Registration/Login may be required to access all resource tools.] Supervolcanoes are unimaginably large volcanoes.

A clear map of the Ring of Fire, with each volcano named. There are a few sentences of caption under the map.