Frequency is the number of waves per second.
Time period is the time for 1 wave to complete.
Wavelength is from the middle of one compression point to the middle of the next consecutive compression point.
Lambda is the name for the wavelength symbol.
There are 2 types of waves:
Transverse and Longitudinal
Transverse waves
The particles move perpendicular to the wave (up and down). Examples are water waves and s seismic waves.

Longitudinal waves
Vibrations are parallel to the direction of energy transfer (forwards and backwards). Examples are sound waves and p seismic waves.

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Physics GCSE Revision
Non-FictionThese are some GCSE Physics revision notes. It will take a while to finish but I hope it helps. 😊
