Question

How do people hear? Look in a mirror, and you will see that your ears are shaped a little like a funnel. That shape amplifies sounds you 21.), which means it makes them louder. 22 sounds travel in waves from your outer ear (the part that you can see) into a tiny tube called the ear canal. At the end of the ear canal is 23. eardrum. When sounds reach your eardrum, they make it vibrate, or move back and forth. On the other side of your eardrum are the three smallest bones in your body. They are in your middle ear. When your eardrum 24), those three bones also vibrate. One of them pushes on the oval window. That is a special covering for your inner ear. When the oval window gets pushed in and out, it causes vibrations in a special fluid 25. your inner ear. That vibration is sent to special nerve cells. Those nerve cells tell your brain what you are hearing. Adapted from http://mrshart spe weebly.com/reading comprehension html weeko




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