Chapter 6 Waves and Sound

Waves in Action:

Wave

Do the Wave!

Wave medium

Compare a wave pulse and a continuous wave.

Wave Pulse

Demonstrate both transverse and longitudinal waves on a Slinky,

Examples of Waves and Their Type

Speed of a wave on a rope depends on its mass density and the tension applied.

Compute the speed of sound in air given the temperature.

Wavelength and Amplitude

Wavelength vs Amplitude Figure

Frequency of a Wave

Wave Equation

Wavefronts and Rays.

Amplitude of a wave gets smaller farther from the source.

Define a plane wave.

Give concrete examples of reflection of waves.

Doppler effect

Effects of Movement on f and λ

Consequences of the Doppler effect.

How it was discovered that the universe is expanding.

Cosmology

Hubble relation (or law)

Echolocation: Radar, Sonar…

Explain what causes a sonic boom.

Diffraction

Examples of Diffraction

Interference

 Constructive interference

Destructive interference

Phase and Interference

What is sound?

Sound

Sound From a String

Reaction of the Air

Sound Wave

Pitch

Decaying Sound

Reverberation

Ultrasound

Applications of Sound

Musical Scale

Pure tones, complex tones, and noise.

Beats

Musical Instruments

Harmonics

Harmonic Diagrams

Standing Wave Demo

Superposition of Waves

Problem on Harmonics

Loudness and Decibels

Decibel Ratings

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