At this site, users can read and view pictures and videos that explain the mechanisms that trigger tsunamis, how they travel across great distances of the ocean, and what damage they cause. Full description.

This report contains true stories that illustrate how to survive (and how not to survive) a tsunami. It is meant for people who live, work, or play along coasts that tsunamis may strike. The stories are personal accounts selected from interviews with people who survived a Pacific Ocean tsunami generated by the magnitude 9.5 earthquake that occurred along the coast of Chile on May 22, 1960. Important ... Full description.

This site has a lesson plan for a class activity on mountain building and graben and horst formation. This particular lesson is number 14, at the top of the page. There are a few other geology lesson plans also listed on this site. Full description.

This resource presents three examples of lava domes, from Alaska, Japan, and Saudi Arabia, along with a 3D simulated view of Mt. St. Helens' lava dome. A diagram shows the progressive growth of Mt. St. Helens' lava dome from 1980 to 1983. A link leads to a thorough explanation of dome-collapse pyroclastic flows (nuee ardentes) and another leads to a numerical program of lava dome growth. Full description.

This United States Geological Survey (USGS) fact sheet is designed to educate visitors about safety in preparation for visiting Kilauea Volcano in Hawaii. This volcano has been erupting almost continuously since 1983 and is noted for its approachable lava flows; however, it undergoes many changes that can be unpredictable and life threatening. Topics include volcanic hazards such as bench collapse, ... Full description.

Unit from Smithsonian multidisciplinary ocean curriculum. Lesson plan focuses on ocean bottom features including continental shelf, deep ocean plain, and mid-ocean ridges. Students study the discovery and mapping of seafloor features, learn to read seafloor maps, then create a map of Atlantic seafloor features. Unit includes: background essay; teacher instructions; maps and forms for student activity; ... Full description.

The Earth Bulletin is a series of stories that explain the science behind current environmental and atmospheric events on our planet. Content changes periodically and older stories are put into the sites archive. Full description.

Description of coral reef environment for high school level and higher. Page is chock full of fantastic photographs each featuring a descriptive caption. Topics discussed include ecology, symbiosis, and predator defense. The site features many different species and stages of coral from all over the globe, and also many of the fishes that are associated with coral reefs. Full description.

This resource discusses the relationship between earthquakes and tsunamis, and the connection between the shape of the ocean bottom and the height of the waves. The article is supported by an animation showing the origin and conclusion of a tsunami, a video interview with a tsunami survivor, and three photographs. There are two sidebars, called 'Catching a Tsunami in the Act' and 'Remembrance of Waves ... Full description.

With three levels to choose from on each page - beginner, intermediate or advanced - this site provides a good introduction to the structure of the ocean. Included are excellent graphics and text about patterns of ocean salinity and temperature with depth, as well as surface currents, deep ocean circulation and even the water cycle. Extensive in-text links provide the means for users to explore the ... Full description.