Learn all about volcanoes around the globe. What are volcanoes and how are they formed? What causes volcanoes to erupt? How do scientists classify volcanoes? What are the different types of volcanoes? What are notable volcanoes and volcanic eruptions? The answers to all of these questions are covered in depth with detailed graphics, diagrams and exciting video. On-screen, multiple-choice reviews at the end of each segment reinforce important concepts and make learning fun.