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Wave Characteristics

Wave Characteristics. Regents Physics. Wave. Oscillations that travel Carry information and energy Have cycles, frequency, and amplitude. Wave. Because waves travel they also have: Wavelength ( λ ): length of one complete cycle

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Wave Characteristics

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  1. Wave Characteristics Regents Physics

  2. Wave • Oscillations that travel • Carry information and energy • Have cycles, frequency, and amplitude

  3. Wave Because waves travel they also have: Wavelength (λ): length of one complete cycle • distance from one point on the wave to the same point on the next cycle • Units: meters(m) Speed (v): how fast the energy is transmitted

  4. Mechanical Waves Waves that require a medium through which to travel *medium = material

  5. Mechanical Waves Amplitude (A): the maximum displacement from equilibrium of the particles of the medium through which the wave travels Frequency (f): number of cycles completed by the particles of the medium as the energy is transmitted

  6. Mechanical waves Pulse: a short length of wave (generally ≤ 1 λ)

  7. Mechanical Waves Transverse Wave: particles in the medium vibrate perpendicular to the direction of motion of the energy Crest: high point (a.k.a. wave front) Trough: low point

  8. Mechanical Waves Longitudinal Wave: particles in the medium vibrate parallel to the direction of motion of the energy Rarefaction: where particles are spread the farthest Compression: where particles are closest together wavelength Direction of travel

  9. http://wildcat.phys.northwestern.edu/vpl/waves/wavetypes.htmlhttp://wildcat.phys.northwestern.edu/vpl/waves/wavetypes.html

  10. Phase Particles being affected by the same wave can be in or out of phase B and D are A and B are B and C are B and D are in phase A and B are 90˚ out of phase B and C are 180˚ out of phase B D A C

  11. Phase Multiple waves can be in phase or out of phase with each other also A and B are A and C are A and B are in phase A and C are 270˚ out of phase A B C

  12. Wave Speed v = fλ = dd = distance energy travels t t = time energy travels = (Hz)(m) = m/s = 1 (m) = m/s s = m/s = m/s

  13. Dependencies • Speed depends on the medium (material through which the energy is travelling) • Frequency depends on the source (whatever is providing the vibrating energy) Therefore, wavelength depends on speed and frequency through v = fλ

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