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the range of wavelengths or frequencies over which electromagnetic radiation extends.

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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 a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second.

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

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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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Ocean waves are caused by wind moving across the surface of the water. The friction between the air molecules and the water molecules causes energy to be transferred from the wind to the water. This causes waves to form. What is a wave? In science, a wave is defined as a transfer of energy.