Waves period, frequency and velocity Name: ________________ Date: ___________ The period of a wave is the time it takes for one full wavelength. It is measured in seconds (s) and has the symbol T. The frequency of a wave is the number of waves per second. It is measured in hertz (Hz) and has the symbol ๐. Period and frequency are inversely proportional to each other (reciprocals). That means as one increases the other decreases and vice versa. As a formula: ๐๐๐๐๐ข๐๐๐๐ฆ = 1 ๐๐๐๐๐๐ or ๐= 1 ๐ 1) Find the amplitude of P, Q and R. 2) Find the period of P, Q and R. 3) Calculate the frequency of P, Q and R. The velocity of a wave is how fast the wave is travelling. It is measured in metres per second (m/s) and has the symbol v. The wavelength of a wave is the distance between two corresponding points in a wave, usually taken from crest to crest or trough to trough. It is measured in metres (m) and has the symbol ๐ (lambda). The wave equation describes the relationship between velocity, frequency and wavelength: ๐ฃ๐๐๐๐๐๐ก๐ฆ = ๐๐๐๐๐ข๐๐๐๐ฆ × ๐ค๐๐ฃ๐๐๐๐๐๐กโ or ๐ฃ = ๐๐ 4) Find the wavelengths for P, Q and R above if their velocities are 100 m/s. 5) Find the amplitude and wavelength of the above wave. 6) If it took 10 seconds for the above wave to pass, calculate its period, frequency and velocity.