"Dynamic Earth is an interactive Web site where students can learn about the structure of the earth, the movements of its tectonic plates, as well as the forces that create mountains, valleys, volcanoes, and earthquakes."
"The goal of the Earth Surface and Interior focus area is to assess, mitigate and forecast the natural hazards that affect society, including earthquakes, landslides, coastal and interior erosion, floods and volcanic eruptions."
National Geographic site contains information and videos about the Earth's landforms.
This Dynamic Planet - World Map of Volcanoes, Earthquakes, Impact Craters, and Plate Tectonics is a joint project of the Smithsonian, USGS and the US Naval Research Laboratory. Click on the map to interact.