Students explore how different materials (sand, gravel, lava rock) with different water contents on different slopes result in landslides of different severity. They measure the severity by how far the landslide debris extends into model...

Students uncover the nature of volcanoes and locate some of the world's active, dormant, and extinct volcanoes. They also discover how scientists detect, measure, and predict volcanic activity.

In this grammar worksheet, students fill in fourteen gaps using the correct form of the word given in bold. Students read their choices and make sure each one is grammatically correct.

This resource presents current information regarding the US Geological Survey activities in Alabama.

A very informative site, which is provided for by the U.S. Geological Survey, on how to write hydrologicic reports.