Sound Waves

Our Sound Waves unit addresses the topic of the physics of sound.  The set of Video Tutorials below lays a solid foundation for understanding their generation by a vibrating objects, their properties and behaviors, and their connection to the operation of musical instruments.

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Sound as a Mechanical Wave

Sound as a Longitudinal and Pressure Wave

Sound Properties: Frequency, Wavelength, and Speed

The Speed of Sound Waves

Sound Intensity and the DeciBel Scale

Calculating Intensities and DeciBel Ratings

Sound Interference and Beats

Sound and the Doppler Shift

The Doppler Equation

Reflection, Refraction, and Diffraction of Sound Waves

Natural Frequency

Standing Wave Patterns

Fundamental Frequency and Harmonics

Resonance

Resonating Strings

Closed-End Air Columns

Open-End Air Columns