Answer:
Amplitude, Wavelength, Frequency, and Speed.
Step-by-step explanation:
Amplitude: The maximum displacement of the wave from the centerline (undisturbed position).
Wavelength: The distance from one crest (outer egde of wave) to crest.
Frequency: The number of crests that pass a single point over a unit of time.
Speed: How far the wave travels in a unit of time.