Answers

  • Brainly User
2015-06-12T15:07:55+05:30
The external ear catches sound waves and channelizes them to the ear drum, via the ear canal. During compression, the pressure increases outside the ear drum which forces the eardrum to move inwards. During rarefaction, the pressure decreases outside the ear drum which forces the eardrum to move outwards. Thus, a vibration is produced in the eardrum. Further, the three bones amplify the sound wave, by vibrating in turns. In the inner ear, the vibrations are converted into electrical signals. These signals are transmitted by the auditory nerve to the brain. Finally, the brain interprets those signals as sound
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2015-06-12T15:08:04+05:30
SOUND IS PRODUCED BY RAPID TO AND FRO MOVEMENTS CALLED VIBRATIONS. WHEN AN OBJECT VIBRATES, IT MAKES THE NEIGHBOURING AIR MOLECULES VIBRATE AND THE PROCESS GOES ON.
WHEN THESE VIBRATIONS REACHES OUR EARS, WE ARE ABLE TO HEAR THEM.  
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