Why are twisters so dangerous? What makes floods happen in a flash? What was the Dust Bowl? How big can waves get? Find out the answers to these and many more questions about volcanoes, tsunamis, earthquakes, and extreme weather. I Wonder Why Volcanoes Blow Their Tops by Rosie Greenwood offers a wealth of information is backed up with stunning, high-quality artwork, fun facts, and lively cartoons.