Physics of the Ear (AQA A-Level Physics): Flashcards
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Practise the cards
10 cards from this deck
Three main sections of the ear
Three main sections of the ear
Outer ear, middle ear, inner ear
Function of pinna
Function of pinna
Collects sound & determines direction
Function of wax glands in ear canal
Function of wax glands in ear canal
Protect eardrum, keep it moist & flexible
Amplification factor of ossicles
Amplification factor of ossicles
Factor of
Pressure amplification: eardrum to oval window
Pressure amplification: eardrum to oval window
Factor of
Function of Eustachian tube
Function of Eustachian tube
Connects middle ear to throat, keeps at atmospheric pressure
Fluid in inner ear
Fluid in inner ear
Perilymph
Fluid inside cochlea
Fluid inside cochlea
Endolymph
Location where high-frequency sounds activate cells
Location where high-frequency sounds activate cells
Near base of cochlea
Amplitude & frequency changes in ear sound transmission
Amplitude & frequency changes in ear sound transmission
Amplitude decreases, frequency constant