Here's a breakdown:
* Vibrations: When an object vibrates, it rapidly moves back and forth.
* Compression: As the vibrating object moves forward, it pushes the air molecules in front of it closer together, increasing the density of the air in that region. This is the compression.
* Rarefaction: When the object moves backward, it creates a space where the air molecules are less dense, called a rarefaction.
This alternating pattern of compressions and rarefactions creates sound waves that travel through the air (or other mediums).
