Energy is the ability for people and things to do work. But it's a little more complicated than that--energy exists in many forms. This book delves into the properties of sound energy and the ways we encounter it every day. Readers learn how vibrations create sound energy by making waves in the air. Full-color photographs, informative sidebars, and thoughtful questions will inspire young readers to learn what makes sound energy so unique. The age-appropriate text is approachable for young readers and helps them to think critically about the material.