Ever thought about how a sound is made? What about how it is received and decoded by the brain? Why do sounds 'sound' different? Why can some sounds travel farther than others? How to sounds move between people, objects, and other sounds? Grade three students explored all of these questions and more when we visited the National Music Foundation at Studio Bell on April 27th.
The Science of Sound
Sound as a Vibration - Student created gif
ASK ME ABOUT: Watch the above gif. Why does the water begin to move before the tuning fork touches it?
How Humans Hear Sounds
Sound waves travel into the ear canal until they reach the eardrum. The eardrum passes the vibrations through the middle ear bones or ossicles into the inner ear. The inner ear is shaped like a snail and is also called the cochlea. Inside the cochlea, there are thousands of tiny hair cells. Hair cells change the vibrations into electrical signals that are sent to the brain through the hearing nerve. The brain tells you that you are hearing a sound and what that sound is.
ASK ME ABOUT: What are some of the reasons that hearing loss or hearing impairment occurs?
Animal Senses - Echolocation/Sonar
ASK ME ABOUT: How have humans learned from animals that use echolocation? What technology do we have today that uses this to our advantage?
Sound as Music - The Recorder
Thank you to Doña Maria for bringing our hearing and sound unit to life in the music room!
ASK ME ABOUT: Why does the instrument make a slightly different sound (a different note) when you block the holes? How do you accomplish the same thing with a string instrument – A guitar, for example?
ASK ME ABOUT
* Keep your eyes open for these sections on the blog. Teachers will post questions to help you start conversations with your child regarding class activities/topics
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