Waves and sounds

GCSE revision for waves and their properties.
What A describes the height of a wave?. What F describes how many waves passing within 1S?. What P describes the time taken for one full wave to pass?. What W describe the distance covered by one full wave?. What S describe how long a distance a wave travels within 1S?. What R is the property of wave which best describes echoes of sound?. What D descrobes a wave changing its speed when entering different medium?. What D describes waves that change direction when meeting an obstacle?. What I is the property of waves when 2 or more waves superposing?. What U is the name of sounds whose frequency is more than 20kHz?. What I is the name of sounds whose frequency is below 20Hz?. What D is the unit to measure loudness?. What P is the property of sounds linking with frequency?. What L is the property of sounds linking with amplitude?. What S is the unit for period?. What H is the unit for frequency?. What K is 1000Hz?. What EM is the type of waves lights are?. What V is what sounds cannot travel through?. What M is the type of waves sounds are?.

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