Sound

VIDEO: Exploring Sound
Students are introduced to many sources of sound, including non-musical and musical. How sound travels through different substances will be explored. The structure of sound waves include wavelengths, crests, troughs, and amplitude. Topics include how we hear sounds, how we make sounds, and how we use sound. sound frequencies beyond the range of human perception are used by some animals for hunting and navigation.
Grades: Gr. 5 - Gr. 8     Runtime: 22:14     ©1993    United Learning

VIDEO: Breaking the Silence: An Introduction to Sound
This program will help students appreciate the many different sounds in the world around them. They will understand how all sounds, from the soft rustling of leaves to the deafening clatter of a jack hammer, are caused by something vibrating. A variety of musical instruments illustrate the relationship between frequency and pitch, and students learn how to make their own simple instruments to explore how pitch can be changed to create different tones. Animation clarifies what sound waves are and how sound waves travel through the air to reach our ears. Students also learn how the ear functions to enable us to hear. Vivid examples show how sound travels through liquids and solids and how sound can echo or be absorbed. Throughout, the program illustrates key points with simple experiments that students can per-form in their own homes.
Grades: Gr. 4 - Gr. 8     Runtime: 27:00     ©1998    Rainbow Educational Media

SOUND: Web Links