When you hear the roar of traffic, the bark of a dog, or your teacher’s voice, you are experiencing sound. This program uses colorful animations to explore important characteristics of sound, including intensity, loudness, pitch, and frequency. Concepts and terminology illustrated in this video include: vibrations, frequency, pitch, amplitude, volume, how sound travels, uses of sound energy, speed of sound, and how we hear sounds.

Originally released by Visual Learning, 2008. Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015. Teacher's guide available under Additional info tag.

Introduction: What is Sound (0:46); --Sound (1:56); -- How Sound Travels (1:40); -- Speed of Sound (1:21); -- Sound, Intensity and Volume (1:14); -- Frequency and Pitch (1:34); -- Sound and Safety (1:41); -- Summary: What is Sound (1:11); -- Video Assessment: What is Sound (1:46); -- Credits: What is Sound (0:36);.