HEARING
Today, a lady named Jane came in and tough us about hearing. She tough us that a nose over 85 decibels will hurt our ears after time. She gave us a tuning fork and a ping pong ball on string we would bang it on the ground and hold it up to our ears and i would make humming sound. We would also put the fork up to the ping pong ball and it would bounce because of the sound vibrations. behind our ear drums there are hears that stick up and they send the sound vibrations to our brain so we know what the are like the sound of cutting paper or walking. The louder the sounds the more they bend an when they bend to far they gone. But we have 9000 in each ear so over all we have 18000. She also told us to protect our ears.
have a good day i hope you learnt something new.