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Properties of Waves Chapter 15 Section 2
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4 Basic Properties The basic properties of waves are amplitude, wavelength, frequency, and speed.
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Amplitude Amplitude is the maximum distance that the particles of the medium carrying the wave move away from their rest positions. Thus, the more energy a wave has, the greater its amplitude.
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Amplitude You can find the amplitude of a transverse wave by measuring the distance from the rest position to a crest or to a trough. When the compressions are dense, it means that the wave’s amplitude is large.
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Wavelength A wave travels a certain distance before it starts to repeat. The distance between two corresponding parts of a wave is its wavelength. You can find the wavelength of a transverse wave by measuring the distance from crest to crest, or from trough to trough. The wavelength of a longitudinal wave is the distance between compressions.
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Frequency Wave frequency is the number of complete waves that pass a given point in a certain amount of time. Frequency is measured in units called hertz (Hz).
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Speed Different waves travel at different speeds.
The speed, wavelength, and frequency of a wave are related to one another by a mathematical formula. Speed = Wavelength x Frequency
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Speed If you know 2 of the 3, then you can find the third one by changing the speed formula around.
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Speed Speed = Wavelength x Frequency Frequency = Speed Wavelength
Wavelength = Speed Frequency
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