Air particles don't actually move in a specific direction when they cause vibrations. Instead, they oscillate back and forth around their equilibrium position.

Here's how it works:

* Sound waves: Sound waves are longitudinal waves. This means the particles in the medium (air in this case) move parallel to the direction the wave is traveling.

* Vibration: When a sound wave passes through air, the air particles don't travel with the wave. Instead, they are compressed and expanded, causing them to vibrate back and forth around their original positions. Imagine pushing a spring back and forth. The coils of the spring don't move with the wave, they just compress and expand.

* Direction: The direction of the vibration is the same as the direction the sound wave is traveling. So, if a sound wave is traveling to the right, the air particles will be vibrating back and forth to the right.

Think of it like this: imagine dropping a pebble in a pond. The ripples move outward, but the water molecules themselves aren't traveling with the ripples. They are just moving up and down in a circular motion. Sound waves in air work similarly.