What is the amplitude of a wave?
The total distance from the top of a crest to the bottom of a trough
The distance moved by a point on the wave in one complete oscillation
The displacement of a point on the wave at the moment it is measured
The maximum displacement of a point on the wave from its undisturbed position
40 exam-style questions on AQA GCSE Physics 6.1 Waves in air, fluids and solids, covering 6.1.1 Transverse and longitudinal waves, 6.1.2 Properties of waves, 6.1.3 Reflection of waves, 6.1.4 Sound waves (HT only), and 6.1.5 Waves for detection and exploration (HT only). Each one has a worked solution and a mark scheme showing where the marks go.