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Sound π’, Oscilloscope : :, - Coggle Diagram
Sound π’
The Ear
Cochlea
Cochlea
It contains fluid and sound-detecting cells with hairs on them. When
the fluid vibrates it makes the hairs vibrate. The cells release chemicals
that convert the vibrations of the soundwaves into an electrical signal
Ear drum
Vibrates when sound waves hit it.
Pinna
Gathers the soundwaves and directs them down the ear canal
Ear canal
Soundwaves travel down the ear canal from the pinna to the ear drum
Ossicles
Malleus
Incus
Stapes
Semicircular canals
Helps with your balance
Auditory Nerve
Sends an electrical signal to the brain
Loudness
Measured in Decibels(dB)
Hearing loss
Loud noises
Objects making hole in
eardrum
Earwax
How to prevent hearing loss
Earplugs
Ear defenders
Microphones
Sound waves make the
diaphragm vibrate
This is turned into an
electrical signal
This electrical signal is then
carried away by wires
The signal goes to an
amplifier to make the sound
louder for loudspeakers
Sound travels in longitudinal waves
When a sound takes place, the particles vibrate
In the waves, there are two parts
Rarefaction
Particles far a part
Compression
Particles close together
Vacuum
The are no particles in a vacuum therefore the vibrations
cannot be transferred meaning the sound cannot be
transferred
Sound travels fastest in solids, then liquids, then gas.
Echoes
An echo is the reflection of sound waves from a hard surface
A sound can also be absorbed by soft surface
materials like carpets and curtains
.
When echoes bounce off multiple surfaces, such as
in an empty room, it can last for a while.
This is called reverberation.
Pitch
hearing
As you get older, your
hearing begins to
decline.
Frequency is how high the pitch is
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