PH-820
Transverse and longitudinal waves
Physics · Secondary 3 · Medium · Transverse and longitudinal waves
A loudspeaker produces sound waves in air that travel horizontally towards a listener. Which statement correctly describes the motion of the air particles as the sound passes?
- They vibrate back and forth parallel to the direction of travel
- They vibrate up and down at right angles to the direction of travel
- They move in circular paths around their starting positions
- They remain completely at rest while only energy moves
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