"Volcanic eruptions are dramatic demonstrations of natures raw power. However, theres much more to the process than the explosive displays we see on the surface. Readers will explore the geological structure that makes volcanic activity possible and follow the sequence of events that result in an eruption. This volume examines other geothermal activities, the benefits of which may surprise young readers. The text is accompanied by vivid photographs to heighten interest and clear diagrams to enhance comprehension"-- Provided by publisher.