Sound Waves (AQA GCSE Physics): Flashcards
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What can sound waves travel through?
What can sound waves travel through?
Solids (causing vibrations)
Function of outer ear
Function of outer ear
Collects sound and directs it down ear canal
Structure of eardrum
Structure of eardrum
Tightly stretched membrane that vibrates
How does eardrum frequency compare to sound wave?
How does eardrum frequency compare to sound wave?
Same frequency
Ossicles
Ossicles
Chain of small bones in middle ear
Function of ossicles
Function of ossicles
Amplify sound waves from eardrum
Where ossicles transfer vibrations
Where ossicles transfer vibrations
Fluid inside cochlea
How hair cells respond to frequencies
How hair cells respond to frequencies
Different cells respond to different frequencies
What hair cells generate
What hair cells generate
Electrical impulse (sent to brain)
Human hearing frequency range
Human hearing frequency range
Hz to kHz
Causes of hair cell damage
Causes of hair cell damage
Prolonged loud noise, ageing, smoking, chemotherapy, diabetes
Effect of age on hearing
Effect of age on hearing
Decreases ability to hear higher frequencies