Download or read book A Project Guide to Sound written by Colleen Kessler and published by Mitchell Lane Publishers, Inc.. This book was released on 2012 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Babies crying, school bells ringing, cars roaring by, the ding signaling that a new text message has arrived . . . sounds are all around us, but how are they made? And how do we hear them? Sounds are created when air vibrates, and we hear them because our ears are specially developed to funnel in and process those vibrations. Through the activities and experiments in this book, you’ll take a hands-on look at how sounds are made and how they are heard. From salt drums to xylophones and sonic booms, you’ll have fun making music and noise—and learning a little along the way!