Why Can't I Hear That? : Pitch and Frequency

Exploring Sound is an exciting new series that focuses on how sounds are made, how we hear sounds, and how and why sounds vary in pitch, frequency, and volume. Using examples from everyday life and fun activities, readers are introduced to these key concepts and encouraged to explore them independently. Can you see sound waves? How do our vocal cords control the sounds we make? Why do prairie dogs have an unusual alarm call? Each Exploring Sound title offers: easy-to-follow activities that investigate different aspects of sound, clear and informative diagrams and explanations, comprehensive topic coverage