For science this year we learnt about the ear and how vibrations travel through the air …
Vibrations
I learnt that vibrations travel through the air by knocking particles in a domino affect till it hits the ear. We used a tuning fork and hit it on the edge of a wooden table and stuck it into a bowl of water, the vibrations from the tuning fork made the water ripple and fly out of the bowl, we also learnt how vibrations can travel from one cup to another only using one piece of string if you pulled it tight.
How the Sound Reaches the Brain
When sound reaches the ear the vibrations enter the funnel like bit in the outer ear called the Pinna, then it moves on to the Eardrum, the Eardrum is a thin membrane that separates the outer and middle ear, the sound vibrates the Eardrum, with the Eardrum vibrating it knocks the three bones inside the middle ear called the Hammer the Anvil and the Stirrup they hit each other in a chain reaction and hits the Cochlea, a hollow tube of the inner ear is usually coiled like a small snail shell which carries the information about the sound into the brain after it gets to the nerve one of the stringy bands of nervous tissue connecting the nerve system with the other organs.
What is Sound?
Sound is vibrations hitting your ear there can be lots of different types of sound like onomatopoeia, onomatopoeia is when you make a sound that sounds like the real thing like boom or woof we also learnt about pitch and volume pitch is when something is high or low and volume is when something is quiet or load, there are also lots of different types of sound e.g. noise and music.
