Health
Pangaea Supercontinent
Waves Vibrations and Oscillations

What causes an eardrum to vibrate?

Answer

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Wiki User
07/30/2009

The eardrum, or tympanic membrane as scientist's would call it, receives sound in the form of sound pressure waves measured in pascals. It's a lot like some one beating on drums with drum sticks, hence the nick name, 'eardrums'. This is why louder sounds with more sound pressure tend to hurt your ears, like beating harder on the drums.