Sound (Edexcel GCSE Physics Combined Science): Flashcards
📚Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
What do sound waves cause in solids?
What do sound waves cause in solids?
Vibrations
Function of outer ear
Function of outer ear
Collects sound & directs it down ear canal
What is the eardrum?
What is the eardrum?
Tightly stretched membrane that vibrates when sound waves hit it
Effect of compression on eardrum
Effect of compression on eardrum
Moves inward
Effect of rarefaction on eardrum
Effect of rarefaction on eardrum
Moves outward
Eardrum vibration freq. vs sound wave freq.
Eardrum vibration freq. vs sound wave freq.
Same frequency
What are ossicles?
What are ossicles?
Chain of small bones in middle ear
Function of ossicles
Function of ossicles
Amplify sound waves
Where do ossicle vibrations transfer in inner ear?
Where do ossicle vibrations transfer in inner ear?
Fluid in cochlea
What different hair cells respond to
What different hair cells respond to
Different sound frequencies
How hair cells signal brain
How hair cells signal brain
Generate electrical impulses
Human hearing frequency range
Human hearing frequency range
Hz to kHz
Causes of hair cell damage
Causes of hair cell damage
Loud noise, age, smoking, chemo, diabetes
Effect of ageing on hearing
Effect of ageing on hearing
Decreased ability to hear higher frequencies