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17 Cards in this Set
- Front
- Back
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Definition of sound |
Sound is a form of energy that is transferred from one point to another as a longitudinal wave |
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What does sound wave have |
Amplitude, frequency and wavelength |
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How is sound produced |
Sound is produced by vibrating sources placed in a medium such as gas, liquid or solid |
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How does sound wave travel |
As a series of compression and rarefraction |
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What are compressions |
Regions where air pressure is higher than the surrounding air pressure(the one with double line or more dots) |
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What are rarefractions |
Regions where air pressure is lower than the surrounding air pressure |
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How to draw pressure - Distance graph |
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How to draw displacement distance graph |
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Does sound wave need a medium to travel? |
Yes (shown by bell jar experiment) |
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Speed of sound on air water iron and granite |
300 1500 5000 5400 |
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Definition of echo |
The repetition of sound due to the reflection of sound |
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Uses of echo? |
Measure large distances Detect the location of objects through echolocation (eg sonar) |
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Definition of pitch |
Pitch is related to the frequency of a sound wave, higher frequency, higher pitch, shorter Wavelength, higher pitch |
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Lower pitch graph/lower frequency geaph |
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Higher pitch/frequency graph |
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Definition of loudness |
Loudness is related to the amplitude of a sound wave , larger amplitude , louder sound |
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Loud sound graph vs soft sound hraph |
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