Answer :
They travel in compressions and rarefactions and are propagated through air.
What are sound waves?
Sound waves are longitudinal waves. They travel in compressions and rarefactions and are propagated through air.
The following are true about sound waves:
- the frequency or amplitude of the sound waves will change if the singer varies their voice.
- the produced sound waves are mechanical waves.
- producing the sound does not change the wave type
Learn more about sound waves:https://brainly.com/question/11797560
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