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Electromagnetic Spectrum is  is the term used by scientists to describe the entire range of light that exists. From radio waves to gamma rays, most of the light in the universe is visible.

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Sound Waves are 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.

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Frequency is 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 is the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

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Wave length is the distance between two peaks of a wave. It can be measured on anything that travels in waves, like sound, light, or water.

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Waves are a disturbance on the surface of a liquid body, as the sea or a lake, in the form of a moving ridge or swell.