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### 21 Cards in this Set

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 Waves moving energy. Transverse Waves particles vibrate at right angles to the movement energy Longitudinal Waves particles vibrate in the same direction as the movement of energy. Amplitude height of wave from middle to a peak or trough. Displacement distance a particle moves from the centre. Wavelength length of one complete wave. Time Period time taken for one complete wave. Frequency number of waves that travel past a point in one second. Wave Equation speed = frequency x wavelength. Reflection bouncing of waves off a surface. Incident Ray ray of light hitting the mirror. Reflected Ray ray of light bouncing off the mirror. Water Fronts peaks of waves, always right angles to the wave direction. Refraction bending of a wave when it goes from one substance into another. Diffraction spreading out of a wave as it goes through a gap, or around an object. How many types of wave are there two; transverse and longitudinal Frequency is ... the number of waves that pass each second. A crest is... the top of the peak of a wavw Wave speed = Frequency x Wavelength Frequency = Wave speed / Wavelength Wavelength = Wave speed / Frequency