The highest part of a wave.  

The lowest part of a wave.  

The vertical distance between the highest (crest) and lowest (trough) parts of a wave.  

The distance from a certain point on one wave to the same point on the next wave (e.g. distance between two consecutive wave crests or between two consecutive wave troughs).  

One half the distance from the crest to the trough. Wave amplitude is a more technical term for wave height and is used in engineering technology.  

The number of waves passing a fixed point in a specified period of time. Frequency has units of waves per second or cycles per second. Another unit for frequency is the Hertz (abbreviated Hz) where 1 Hz is equivalent to 1 cycle per second.  

The time it takes for two successive crests (one wavelength) to pass a specified point.  

The distance the wave travels divided by the time it takes to travel that distance. Wave speed is determined by dividing the wavelength by the wave period. In symbols c = λBB; / T, where c is the wave speed, λ (lambda) is the wavelength, and T is the period.  

Very small waves with wavelengths less than 1.7 cm or 0.68 inches. They are the first waves to form when the wind blows over the surface of the water and are created by the friction of wind and the surface tension of the water. These tiny little waves increase the surface area of the sea surface and if the wind continues to blow, the size of the wa [..]

Small waves causing the ocean surface to be rough.