This title helps you investigate the powerful pressures that cause the ground to explode in lethal showers of molten rock or to move with sudden, devastating violence. It is packed with facts about how eruptions and quakes happen, and how they affect the world. It features over 280 spectacular photographs and superb cross-section diagrams capture the beauty and power of our planet in action. It includes exciting step-by-step experiments, such as simulating an earthquake and an erupting volcano, or making a seismograph, that help you to understand the science. It is an ideal reference book for use at home or school by 8- to 12-year-olds. You can discover the origins of volcanic eruptions and seismic activity, and the devastating effects they have on the landscape and anything that lives on it. Extraordinary pictures evoke the force of red-hot rivers of lava, a street disappearing underground, bubbling hot springs and terrifying tidal waves. Action-packed text explains where, why, when and how the earth cracks and erupts. You can learn about the prehistoric outbursts that changed the course of life on our planet, explosions deep on ocean floors, and the most dramatic earth movements in history.