Waves

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  • Created by: elenii
  • Created on: 12-09-15 14:07
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  • Waves
    • Transverse waves
      • A transverse wave is one that vibrates, or oscillates.
      • They vibrate at right angles to the direction in which the energy or wave is moving.
      • Examples of transverse waves:
        • Light waves
        • Waves travelling on the surface of the water
        • Waves on springs and strings
    • Longitudinal waves
      • A longitudinal wave is one which the vibrations, or oscillations, are along the direction in which the energy or wave is moving.
        • Examples of longitudinal waves:
          • Sound waves
          • A slinky when you push and pull the end
          • P-waves
    • Diffracion
      • If a barrier with a large gap is placed in the path of the waves, the majority of the waves passing through the gap continue through in a straight line.
    • Speed = Frequency x Wavelength
      • v = f x lambda
    • Frequency = 1 ÷ Time
      • f = 1 ÷ t
    • Refraction
      • If the boundary between shallow water and deep water is at an angle to the direction in which the waves are moving, the direction of the waves changes.
      • We say that the waves have been refracted or have undergone refraction.
    • Reflection
      • When waves strike a straight or flat barrier, the angle at which they leave the barrier  surface is equal to the angle at which they meet the surface.
      • The waves are reflected at the same angle at which they struck

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