What is rarefaction and compression in sound?
How does the sound travels through air by forming waves. Please show it by video animation.
What is a slinky spring?
Hi,
Sound is a vibration that is capable of being heard.
Sound propagates in a material by compression and rarefactions. When sound produced it vibrates the nearby air molecules. Air molecules are like small balls when sound travels through air it alternatively makes these balls pushed close together and then pulled away from each other. The area where they are together are called compressions and that area where they are away from each other are called rarefactions.
Slinky spring is a spring which is used as a toy and for many tricks. if we stretched it, it expands and on release it again comes to its original length.
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Hope, you get the answers.
Best wishes!!