Hello friends, it is me! Today I learned about sound.
What is sound?
Sound is a bunch of waves that push things and basically, your auditory bones are like a drum that hoes pish pish pish and the the hairs move in your cochlea. It’s all about vibration.
Exploring the Ear:
In our middle ear, we have the eardrum. It picks up vibrations from sound waves. When sound waves are picked up, it makes it push against your eardrum and make vibrations. The inner ear has a shell-shaped thing called a cochlea. It is filled with liquid and a thousand tiny hairs. The hairs make sound waves because they wave back and forth which sends a wave to your brain and that’s how you hear. The outer ear has the ear canal and the mastoid process. The middle ear has the eardrum. The three tiny bones in the middle ear are called the auditory bones. The earwax helps the ear stop infections
Sound Travels:
Sound travels through the ear canal, hitting the eardrum and the auditory bones called the cochlea. Did you know a cochlea is Latin for snail?
Properties of sound:
- sound travels
- it can modified – this means changed
- it can be absorbed
- it can be reflected – echoes!
- caused by vibrations
Pictures from experiments:
We used tuning forks to see how sounds travel in vibrations
We tried to make a’ phone’ it did not work because the vibrations did not move along the wool material.