Learn all about volcanoes with this 26 slide animated PowerPoint. Informative text on volcano types and shapes, how and what is an eruption, how eruptions are measured, the difference between lava and magma, fun facts, famous volcanoes and more. Includes video link to Mt. St. Helens eruption, and a video clip of an underwater volcano erupting. ©2016 HappyEdugator. This product is the intellectual property of Deborah Hayes aka HappyEdugator.