Blowing across the top of the bottles containing different amounts of water causes a column of air to vibrate inside the bottle to vibrate and the vibration produces sound waves.
(the bottles; containing; different amounts of water) (Blowing across the top of the bottles; causes; a column of air) (the vibration; produces; sound waves)
the bottles Blowing across the top of the bottles the vibration
containing causes produces
different amounts of water
a column of air
sound waves