As a huge volcano erupts, scorching-hot lava pours down its slopes. Soon, however, the lava will cool and become solid rock. This book explores how igneous rock is formed from magma, featuring a clear, accessible, step-by-step explanation of the process. Readers will not only learn about different types of igneous rock, they will also be introduced to some amazing igneous rock formations, as well as find out how people use this special kind of rock. Filled with information perfectly suited to the abilities and interests of an early elementary audience, this colorful, fact-filled volume gives readers a chance to learn and develop their powers of observation and critical thinking. From stunning photographs to high-interest facts about igneous rocks, this book makes learning about Earth's geology a lively, engaging experience.