CHAPTER 1 What Is a Volcano 4 CHAPTER 2 What and Where 12 CHAPTER 3 Deadly Volcanoes 16 ACTIVITIES TOOLS Try This 22 Glossary 23 Index 24 To Learn More 24
chapter one What Is a Volcano Imagine you are on a boat on Lake Arenal in Costa Rica In the distance you see ash coming out of a mountain A river of rock flows down its side Wow It’s a volcano
Volcanoes are vents in the earth’s surface They let out gas rocks lava and ash into the air
