Question

Sound waves are longitudinal waves but oscilloscopes graph them a what?

Answer 1

Answer:

Sound waves are longitudinal. Humans hear sounds from 20 - 20 000 Hz. Higher frequencies are called ultrasound. Oscilloscopes trace sound waves.

Explanation:

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Answer 2

Sound waves are longitudinal waves but oscilloscopes.

• Sound is indeed a wave that has been produced by air motions.

• The sound waves are converted into electricity by a microphone. The oscilloscope then displays the appearance of these electrical waves. The wave seems smooth and regular for a natural sound of just one wavelength, such as a vibrating string or whistle.  Sine waves are what they're called. The frequency of high notes is high, and the waves are close together. The frequency of bass notes is low, and the waves are spaced apart.
• Other pleasant noises, such as singing or the sound of a violin, are also common. They produce waves that recur, although they are not as smooth. This would be attributable to the fact that the sounds is made up of various frequencies mixing together. Unpleasant noises, such as noise or chatting, produce jagged lines. It appeared to be no discernible pattern. There are too many frequencies mingled together.