Another solid title from the Visual Learning Company's Elementary Physical Science collection, What Is Sound? illustrates the basic physics behind sound—breaking down the steps of just what happens when we hear a dog bark or someone say “hello.” Using colorful animated segments to define sound and how it travels through the atmosphere, What Is Sound? covers topics and concepts including longitudinal waves, amplitude, the relationship between frequency and pitch, and hearing safety, among others. The accompanying curriculum features summaries, quizzes, and teacher's guides, while DVD extras include indexes, labeled slides, an iMovie project, and a glossary. Recommended. Aud: E, I. (E. Gieschen)
What Is Sound?
(2008) 14 min. DVD or VHS: $89.95 (teacher’s guide included). Visual Learning Company (tel: 800-453-8481, web: <a href="http://www.visuallearningco.com/">www.visuallearningco.com</a>). PPR. Closed captioned. ISBN: 978-1-59234-225-9 (dvd), 978-1-59234 May 25, 2009
What Is Sound?
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