The fact that sound travels as a vibration might really blow readers» minds, especially those in need of help understanding this science curriculum topic. Including simple discussions of the sound barrier and volume, the main content covers all aspects of sound readers might need to know for science class. Accessible language and colorful diagrams make this volume perfect for those struggling readers or other students in need of review. Key vocabulary terms are included in an extended glossary or fact box so all readers have the knowledge to discuss sound whenever they need to.