Sound Flashcards
When are sounds made
When an object vibrates
What vibrates when these make these sounds
a)violin
b)singer
c)drum kit
a)strings
b)vocal cord
c)drum skins
In a spring why do the coil’s move back and fourth
Because the wave is moving along the spring
Sound travels in
Waves
What do waves do
Carry energy from one place to another
What type of wave is sound
A longitudinal wave
Longitudinal
The direction of the vibration is the same direction as the movement of the wave (parallel )
Sound travels through air as a series of
Compressions and rare factions
Compressions occur when
Particles are closest together
Rare factions occur when
Particles are furthest apart
What happens when air is removed from the bell jar
We can see the bell ring but can’t hear it
Sound needs what to be transmitted
Particles
Where does sound travel
a)fastest
b)slowest
c)not at all
a)solids
b)gases
c)vacuum
What makes up the outer ear
Pinna,ear canal and ear drum
What is the function of the pinnacle,ear canal and ear drum
Collect and funnel sound waves to ear drum
What is made by the body to keep the ear clean(what can be the issue)
Ear wax-there can be a build up sometimes
What 3 small bones make up the middle ear
Stirrup,hammer and anvil
What is the purposes of the middle ear
Amplifies the sound vibrations
What does the eustachian do
Connects to the throat and equalises the pressure
What makes up the inner ear
Semicircular canals
Auditory nerve
Cochlea
Where do the vibrations go beyond the oval window
The cochlea
What is found in the cochlea
Fluid and hairs(fibres)
What do the fibres in the cochlea do
Sway in the fluid(sound moves it)which sends an electrical impulse to the brain 🧠
Why does sound travel fastest in solids
Because the particles are packed tightly making it more dense therefore transmitting sound quicker
