 Chapter 26: Sound Printer Friendly Version
Resource Lessons

Labs

Worksheets

Textbook Assignments

Textbook Resources

Diagrams: 26.2, 26.3, 26.4, 26.5, 26.6, 26.9, 26.10, 26.11, 26.13, 26.14, 26.16
In-Text Questions: pg 393 and 399

NextTime Questions

Vocabulary

 wave vw = fλ mechanical non-mechanical longitudinal radio waves vs sound waves damped heat compression rarefaction amplitude (pressure/density) point source frequency (f) hertz kilohertz megahertz vibration period (T) equilibrium position wavelength (λ) relationship between frequency and wavelength relationship between frequency and period human range of frequencies infrasonic ultrasonic intensity, decibels interference beats beat pitch beat frequency constructive destructive antinodes (A) nodes (N) loops resonance forced vibration natural frequency properties of open pipes properties of closed pipes harmonics overtones standing waveform for an open water column reflection echo reverberation speed of sound (dry air) speed of sound increases with the medium'srigidity, temperature, humidity

Formulas

 vw = fλ d = rt sound level dB to power    take the difference in the decibels, divide that difference by 10,    relationship between the original sound levels equals 10x power beats beat frequency = |f2 - f1| beat pitch = ½(f1 + f2) speed of sound in dry air vw = 331 + 0.6T open-closed pipe for the fundamental, A-N   Lpipe = ½ loop = ¼λ open-open pipe for the fundamental, A-N-A   Lpipe = 1 loop = ½λ Related Documents