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14 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are sounds made of? |
Vibrations! |
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Higher frequency = what pitch? |
Higher pitch! |
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Lower pitch = what frequency? |
Lower frequency! |
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What is the size of the amplitude for louder sounds? |
The amplitude is BIGGER! |
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What is the size of the amplitude for quieter sounds? |
The amplitude is smaller! |
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Which one is louder, one or two? Why? |
Number 2, as the amplitude (height of the waves) is bigger! |
What's the amplitude? |
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Which one has a lower pitch, one or two? Why? |
Number 1, as the frequency is lower and the waves are further away from each other! |
What's the frequency? |
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What's the speed of sound (in m/s)? |
340 m/s! |
It's between 300 and 350 m/s. |
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Why can younger people hear higher sounds than older people? |
The cilia cells die out as you get older, making you less sensitive to higher sounds! |
What cells are there in the cochlear? |
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What is volume measured in? |
Decibels (dB)! |
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At what level of volume can cause deafness? |
100 dB! |
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What is frequency measured in? |
Hertz (Hz)! |
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Which is louder, a 450 Hz sound at 50 dB or a 100 Hz sound at 65 dB? |
The 100 Hz sound at 65 dB! |
What is volume measured in? |
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Which is higher, a 900 Hz sound at 10 dB or a 800 Hz sound at 65 dB? |
The 900 Hz sound at 10 dB! |
What is pitch measured in? |
