Question

what happens to the air particles as the sound wave travels through them?
it might help to focus on just the red particles for this question.

1. they travel from the speaker to the end of the room.
2. nothing
3. they vibrate in place.

Explanation:

Sound is a longitudinal wave. Air particles act as medium carriers: they oscillate back and forth in their original positions to transfer sound energy, but do not travel across the room with the wave.

Answer:

They vibrate in place.