Question | Answer |
The wavelength of a wave is the distance over which the wave's shape repeats itself | It is represented by the symbol λ |
An example of this is shown with the sine wave |
Image:
Wavelength (image/png)
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The top of the wave is called the crest and the bottom is called the trough | The wavelength can be measured from crest to crest or from trough to trough |
The SI unit of wavelength is the meter. | This is same for all types of waves |
We can find the wavelength of a sound wave from the equation λ =\(\frac{v}{f}\) | Where λ is the wavelength, v is the speed of sound and f is the frequency |
The amplitude of a wave is the change over a period | Peak-to-peak amplitude is measured from the trough to the crest of the wave |
The amplitude effects the loudness of the tone of the sound | The bigger the amplitude, the louder the sound |
The amplitude is not always constant with sound waves | It can vary with time / position |
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