Waves and Sound

Waves and Sound - Waves & Sound A. Waves 1. The nature of...

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A. Waves 1. The nature of waves a. A wave is a rhythmic disturbance that transfers energy. b. All waves are made by something that vibrates.
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2. Mechanical waves need a matter medium to travel through. (sound, water, seismic) 3. Two basic types of waves: a. Transverse b. Compressional (longitudinal)
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4. Wave properties: a. Wavelength - distance from a point on a wave to the same corresponding point on the next wave. b. Frequency - number of waves that pass a point in one second (expressed in Hz).
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c. Wavelength has an inverse relationship to wave frequency. d. Wave velocity depends on the type of wave and medium. 1) Sound is faster in more dense media and in higher temps. 2) Light is slower in more dense media, but faster in a vacuum.
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3) e. Amplitude - size related to the energy carried by the wave. 1) Transverse - how high above or how low below the nodal line. 2) Compressional - how dense the medium is at the compressions & rarefactions.
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Wave behavior: a. Reflection - the bouncing back of a wave. 1)
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This note was uploaded on 11/22/2011 for the course EL ED 302 taught by Professor Staff during the Winter '08 term at BYU.

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Waves and Sound - Waves & Sound A. Waves 1. The nature of...

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