Hertz - The unit for frequency, Transverse - Oscillations perpendicular to energy transfer, Longitundinal - Have compressions and rarefactions, Period - The time for one wave, Seconds - The unit for time period, Frequency - The number of waves passing per second, Wavelength - Measured in metres, Amplitude - Related to volume of a sound wave, Light waves - An example of a transverse wave, Sound waves - An example of a longitudinal wave, Random error - Impact of these reduced by repeat testing, Velocity - Measured in m/s, 3 x 108 m/s - Speed of EM waves through a vacuum , Wave front - An imaginary surface representing points of a wave that vibrate in unison,

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