vibrations - small movements, like a wobble, sound source - where a sound comes from, 340 meters - how far sound travels per second , Ear canal - tube that runs from outer ear to inner ear, ear drum - thin layer of tightly stretched skin, hammer - first tiny bone , stirrup or stapes - the third tiny bone that is moved by the anvil, cochlea - the spiral tube with fluid inside , auditory nerve - carries messages to the brain from the cochlea, pitch - how high or low a sound it, amplitude - how loud or quiet a sound is,

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