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There are two types of waves: longitudinal and transverse. In a longitudinal wave, the wave moves parallel to the disturbance. In a transverse wave, the wave moves in a direction perpendicular to the direction of disturbance in the medium. For example, in a vibrating string, the string moves up and down, but the pulse travels down the string. The wave moves in a direction perpendicular to the way the string moves. The amplitude of a wave is a measure of its size, or the distance between its peak and trough. It is also a measure of the amount of

energyin a wave. While amplitude is hard to calculate for longitudinal waves, it is a fairly simple task to calculate in transverse waves.

Instructions
    • 1

      Find the point where the string (or other medium) is farthest from horizontal in one direction.

    • 2

      Measure the distance between that point and the horizontal.

    • 3

      Double that distance. This is the amplitude.


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Audra Weissnat

Lvl 13
3y ago

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Well, I take it you mean a wave in the air, like a sound wave (alternating compressions of air). Volume of a sound wave ( a type of compressional wave) is our perception of its amplitude, the amplitude is a measure in the intensity of the waves, or the amount of variation in air pressure. Our perception of pitch varies with the frequency, or how frequently the alternations in air pressure persist.


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What is amplitude for kids?

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What controls the amplitude of a wave?

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What can the amplitude of a wave be considered a measure of?

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How is the density at a compression in a compressional wave like the height of a transverse wave?

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What is it call when a measure of the energy in a wave?

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