Frequency
The number of waves passing a point per second, measured in hertz (Hz)
Wavelength
The distance from a point on one wave to the same point on the next wave, measured in metres (m)
Amplitude
The maximum displacement of a wave from rest position
Longitudinal waves
A wave in which the direction of oscillation is parallel to the direction of wave motion
Transverse wave
A wave in which the direction pf oscillation os perpendicular to the direction of wave motion.
Period of a wave
The time taken for one full wave to pass a point. (s)