Plate Tectonics

• Plate Tectonics in a Nutshell ^[1] (shows best diagram)
• Natural Hazards ^[2] (revisions and tests)
• Earth Floor: Plate Tectonics ^[3]
• The action is at the edges! ^[4] (US Nationan Park Service)

Volcanoes

• Morphed Eruption of Mt. St. Helens ^[5] (video on YouTube)
• Hawaii’s Spectacular Volcano Eruptions ^[6] (video on YouTube)
• Geography Lesson: What is a Volcano? ^[7] (video on YouTube)
• Volcanoes and volcanic activity ^[8](BBC Bitesize)
• Types of volcano hazards ^[9] (U.S. Geological Survey)
• Geologic Hazards at Volcanoes ^[10] (poster, pdf file)
• Volcanic ash ^[11] (U.S. Geological Survey)
• Protect Yourself from Volcanic Ash ^[12] (pdf file)