Sam will introduce your students to sound waves, echo, infrasound, characteristics of sound, oscilloscope, vibrations, Morse code, sonar and more. The book also includes fun activities such as word searches, crossword puzzles, writing activities, unscrambling words and more. The thought-provoking science fair project objective is to determine if teenagers, but not adults, can hear the cell phone " mosquito ring tone," which is a frequency of 17,000 hertz.Sam tunes in to the science of Sound is a reproducible, colorful and fun book with hand-on experiments, a science fair project, metric conversions, the scientific method and a glossary. This book covers the exciting careers, many inventors, and actual tools and equipment with a touch of humor. This book is content-rich and activity strong, and intriguing for the student who is science-minded who just can't get enough information about sound. This book meets national standards and perfect for a stand-alone unit or as a textbook supplement.