Class 9 Physics Sound Human Ear

The Human Ear

  • Pinna : Pinna is the outer ear. It acts like a funnel to send the sound waves inside the ear.
  • Auditory canal: Sound travels from the outside through auditory canal
  • Eardrum: The sound then falls on the eardrum which is at the end of the canal.
  • Bones Hammer, Anvil, Stirrup : The sound vibrations are then passed on to these bones in the middle ear.
  • Cochlea: The sound waves are converted to electrical signals.
  • Auditory nerve: It sends the signals to the brain.

Brain: The brain interprets the signals and that's how we hear.

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