sound with application

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  • Created by: sharonn.0
  • Created on: 21-04-22 20:31
what type of waves are sound waves
longitudinal waves
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what is longitudinal waves
particles vibrate parallel to the direction of wave travel
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what speed does sound travel in air
330 m/s
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how does the ear detect sound
sound waves enter ear canal and cause eardrum to vibrate
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what are high amplitude waves
loud
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what are low amplitude waves
quiet
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what is the human hearing range
20-20000Hz
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what are infrasound
sound waves with frequencies below 20Hz
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what are ultrasound
sound waves with frequencies above 20,000Hz
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what are uses of ultrasounds
- breaking kidney stones
- cleaning jewelry
- foetal scanning
- detecting cracks in machinery
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what happens when ultrasound meet the boundaries of different materials
- some ultrasound waves are reflected at the boundary
- time taken from wave to leave and return to detector is measured
- the depth of boundary can be determined
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what are p waves
longitudinal waves
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properties of p waves
- can travel through solid and liquids
- faster than s waves
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what are s waves
transverse waves
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properties of s waves
- can only pass through solids
- slower than p waves
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what is the mantle
solid
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what is the outer core
liquid
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what is the inner core
solid
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how does sound waves travels in solids
fastest
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how do sound waves travels in liquid
slowest
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what happens when sound moves from dense medium to less dense
- wavelength increases
- frequency stays the same
- velocity increases
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what happens when sound moves from less dense to more dense medium
- wavelength decreases
- frequency stays the same
-velocity decreases
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Other cards in this set

Card 2

Front

what is longitudinal waves

Back

particles vibrate parallel to the direction of wave travel

Card 3

Front

what speed does sound travel in air

Back

Preview of the front of card 3

Card 4

Front

how does the ear detect sound

Back

Preview of the front of card 4

Card 5

Front

what are high amplitude waves

Back

Preview of the front of card 5
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