Definitions
Wavelength - Distance of one wave from crest-crest (trough- trough)
Period - Time it take a wave to vibrate one time
Amplitude - Distance from Midline to max/low of wave
Frequency - Number of waves per second
Transverse wave - Motion perpendicular to the energy. (Light, Ocean waves)
Longitudinal waves - Compressions and rarefactions of particles, a close and far moment. (Sound, vibrations.)
Electromagnetic spectrum - The range of electromagnetic light, radiation, and wavelengths.
Calculations
Wavelength: λ; λ = v/f
Period: T; T = 1/f
Frequency: f; f = v/λ
Wave speed: v; v = λf
Amplitude: A
Hertz: Hz: waves/ second