DVD

Demonstrations include: 1: Mechanical Resonance - Forced Vibrations with Single Coupled Oscillators; 2: Velocity, Wavelength, and Frequency Reflected Waves - Transverse Waves on a Coil Spring; 3: Change in Medium /Interference - Transverse Waves on a Coil Spring; 4: Transverse Standing Waves - Vibrational Modes on a String; 5: Longitudinal Waves - Propagation/Interference of Longitudinal Waves

Demonstrations include: 1: Nature of Sound and Waves - Sources and Propagation of Sound; 2: Propagation of Sound - Direct Measurement of the Speed of Sound in Air and Metal; 3: Transmission of Sound Through a Medium - Attenuation of Sound in a Vacuum; 4: Refraction of Sound - Carbon Dioxide Sound Lens; 5: Interference of Sound - Sound Divided into Paths of Differing Length; 6: Interference of

Demonstrations include: 1: Standing Sound Waves - Resonating Air Column with Cork Dust; 2: Standing Sound Waves - Resonance with Illuminating Gas in Flame Tube; 3: Standing Sound Waves in Two-Dimensions - Illuminating Gas in a Resonating Cavity; 4: Vibrations in a Two-Dimensional Surface - Chladni Plate; 5: Resonance/Real-Time Strobe Holography - Resonant Modes of a Vibrating Bell; 6: Quality

This program helps students learn the principles of sound, the range of human hearing, and significant terms as they discover the science behind everyday sounds. Travel deep into the ocean and high into the skies in search of creatures who use echolocation.

Through instrument, voice, and graphics, students easily discover how sounds are produced and students learn how we hear. Vibration is demonstrated, and children experiment with the way sound travels—in the air, through the ground, and under water. Teacher's Guide available in disk and online: www.schoolvideos.com