Calculate wave speed from frequency and wavelength.

Wave speed is calculated with v = f? by multiplying frequency in hertz by wavelength in metres. A frequency of 4000 Hz and wavelength of 0.05 m gives 200 m/s. Students should show unit conversion when frequency is in kHz or wavelength is in cm or mm. This objective focuses on the rate of energy transfer through the wave, so it is different from calculating frequency from period or interpreting amplitude on a graph. Within the subtopic Properties of waves in Waves in air, fluids and solids, the explanation is anchored to wavelength, frequency, wave speed and uses those terms in the approved AQA GCSE Physics Waves context.