Link to our latest notes and resources: https://drive.google.com/drive/u/2/folders/15FiTDXvqn9Dro7UmuRhn4fVtonBgy6TM 7 Waves An understanding of colour from Cambridge IGCSE/O Level Physics or equivalent is assumed. 7.1 Progressive waves Candidates should be able to: 1 describe what is meant by wave motion as illustrated by vibration in ropes, springs and ripple tanks 2 understand and use the terms displacement, amplitude, phase difference, period, frequency, wavelength and speed 3 understand the use of the time-base and y-gain of a cathode-ray oscilloscope (CRO) to determine frequency and amplitude 4 derive, using the definitions of speed, frequency and wavelength, the wave equation v = f λ 5 recall and use v = f λ 6 understand that energy is transferred by a progressive wave 7 recall and use intensity = power/area and intensity ∝ (amplitude) 2 for a progressive wave 7.2 Transverse and longitudinal waves Candidates should be able to: 1 compare transverse and longitudinal waves 2

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