Here's how it works:

* Vibrations: When something vibrates, it rapidly moves back and forth.

* Air Particles: These vibrations cause nearby air particles to also move back and forth.

* Compression and Rarefaction: As the vibrating object moves forward, it compresses the air particles in front of it. When it moves back, it creates a space with fewer air particles (rarefaction).

* Wave Propagation: This cycle of compression and rarefaction continues, creating a wave that travels through the air.

* Sound: Our ears detect these changes in air pressure and our brains interpret them as sound.

So, sound is essentially a mechanical wave that travels through the air due to vibrations.