Go on a journey to the center of our planet and discover how the earth moves! With breathtaking photography, illustrations and amazing facts, you will learn all there is to know about volcanoes and earthquakes. Volcanic eruptions and earthquakes are among the most impressive natural phenomena. They're both terrifying and breathtaking. With their gigantic power, they can shake the earth, rip it open, and make it tremble. Some earthquakes even create devastating tsunamis that level entire villages. And when a super volcano erupts, the entire world feels it . . .Fourth book in the Wow! series, full of inspiring animals, plants, and phenomena that are so spectacular you'll be left in awe! For scientists ages 6 years and up.