In this book you will find the answers to more than 70 questions about things that change our planet: volcanoes, earthquakes, floods, glaciers, erosion, drought, and more. Is the Pacific Ocean growing wider? What is the oldest rock ever found? Are volcanoes still forming islands? How are waterfalls made? What will Earth look like in 10000 year? Learn that our planet is always changing. Mountains are building up. Continents are drifting. Some oceans are getting bigger. Even wind and rain change Earth. There are hundreds of facts to collect, and detailed illustrations show you the wonders of our planet and even give you a glimpse inside.!