Sound is propagated in sound waves, which are (in simple terms) waves of variation in air pressure caused by physical phenomena such as vibrating vocal cords, the vibrations of the reed as air flows through a flute, aircraft breaking the sound barrier, or anything else that produces sound.
(Sound; is propagated; L:in sound waves) (aircraft; breaking; the sound barrier, or anything else) (sound waves; are; in simple terms) waves of variation in air pressure caused by physical phenomena such as vibrating vocal cords, the vibrations of the reed as air flows through a flute) (anything else; produces; sound) (air pressure; caused; by physical phenomena such as vibrating vocal cords) (air; flows; through a flute)
Sound aircraft sound waves anything else air pressure air
is propagated breaking are produces caused flows
L:in sound waves
the sound barrier, or anything else
in simple terms) waves of variation in air pressure caused by physical phenomena such as vibrating vocal cords, the vibrations of the reed as air flows through a flute
sound
by physical phenomena such as vibrating vocal cords
through a flute