Plate Tectonics
- Plate Tectonics in a Nutshell (shows best diagram)
- Natural Hazards (revisions and tests)
- Earth Floor: Plate Tectonics
- The action is at the edges! (US Nationan Park Service)
Volcanoes
- Morphed Eruption of Mt. St. Helens (video on YouTube)
- Hawaii’s Spectacular Volcano Eruptions (video on YouTube)
- Geography Lesson: What is a Volcano? (video on YouTube)
- Volcanoes and volcanic activity (BBC Bitesize)
- Types of volcano hazards (U.S. Geological Survey)
- Geologic Hazards at Volcanoes (poster, pdf file)
- Volcanic ash (U.S. Geological Survey)
- Protect Yourself from Volcanic Ash (pdf file)
