Waves

Card Set Information

Author:
algebrageek
ID:
194648
Filename:
Waves
Updated:
2013-01-23 08:47:07
Tags:
physics
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Description:
AS AQA A Physics waves key terms
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  1. Wave speed (ms-1)
  2. Amplitude (m)
    Maximum displacement of a vibrating particle from its mean/equilibrium postion.
  3. Wavelength (m)
    Least distance between two adjacent points that are in phase.
  4. Period (s)
    Time for one complete cycle.
  5. Frequency (Hz)
    • Number of cycles per unit time.
  6. Intensity (Wm-2)
    • A= amplitude
  7. Compression
    When the particles in a material are bunched together (high pressure).
  8. Rarefaction
    When the particles in a material are widely spaced (low pressure).
  9. Peak
    Maximum [amplitude?] of a wave
  10. Trough
    The minimum [amplitude] of a wave.
  11. Mean position
    • Rest position.
    • Position about which an oscillator oscillates.
  12. Phase (radians of degrees)
    How far an oscillator is through a cycle.
  13. Phase difference
    Difference between the phases of two waves/oscillators.
  14. Longitudinal
    Displacement is parallel to the direction of energy transfer.
  15. Transverse
    Displacement is perpendicular to the energy transfer.
  16. Ray
    • Point on the direction of the energy transfer.
    • Perpendicular to the wavefronts.
  17. Wavefront
    Parts of a wave that are moving together with the same phase.

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