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A wave is a wave is a wave !
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Waves They are an everyday part of our life Hear & See Anatomy of a wave Cycle – from peak to peak Period - # of sec. / cycle Frequency – Number of cycles / sec.
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More Anatomy of a wave Crest Trough Wavelength (cycle)
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Fact: In a wave the medium DOES NOT move A wave is a transfer of energy A floating ball on the lake The Poseidon Adventure – the movie Wave types Longitudinal (L-wave) Matter movement in the same direction as the wave Transverse (T-wave) Matter movement that is perpendicular to the direction of the wave
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Wave Medium Travel Gas L-wave = Yes, T-wave = No Liquid L-wave = Yes, T-wave = No Solid L-wave = Yes, T-wave = Yes A 3 rd type of wave S-wave (surface wave)
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Sound Waves A medium must be present !!!!! Something must carry the energy What about the Moon???? What can the human ear hear? We hear L-waves only 20 – 20,000 Hz Velocity of sound 1,087 ft/sec. or 741.13 m/h (@ 0 degrees C)
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Waves reflect & refract Echo.10 sec. Application Sonar Radar “Speed Traps” Moving Sound Doppler Effect A change in wave length due to movement Change in frequency Application Radar gun Astronomy
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