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Generally, electromagnetic radiation is classified by wavelength into radio wave, microwave, terahertz (or sub-millimeter) radiation, infrared, the visible region that is perceived as light, ultraviolet, X-rays and gamma rays. The behavior of EM radiation depends on its wavelength.

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1. a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.

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Wave speed is the speed at which a wave travels.Wave speed is related to wavelength, frequency, and period by the equation wave speed = frequency x wavelength. The most commonly used wave speed is the speed of visible light, an electromagnetic wave.

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the rate at which something occurs or is repeated over a particular period of time or in a given sample.

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Amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.

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the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

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In physics, any regularly recurring event, such as surf coming in toward a beach, that can be thought of as a disturbance moving through a medium.Waves are characterized by wavelength, frequency, and the speed at which they move.