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| How does the wavelength change when the frequency of sound increases? (assume the medium is constant) |
decreases |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| How does the pitch of sound made by an instrument change as you increase the length of the instrument? |
decreases |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is the equation tells us the frequency needed to produce a certain standing wave patter? |
f = nv/2L (n = 1,2,3,...)
f = nv/4L (n = 1,3,5,...) |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What do standing waves correspond to when we experience sound? |
notes played on an instrument |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What does destructive interference produce in sound? |
a softer sound or no sound |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What does constructive interference produce in sound? |
a louder sound |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is the relationship between intensity, dB, and loudness? |
if intensity is multiplied by 10^x
dB goes up by +10x
loudness is multiplied by 2^x |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What does amplitude correspond to when we experience sound? |
volume |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is the equation that relates frequency and wavelength? |
v = λf |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is the equation for the speed of a wave? |
v = ∆x/∆t |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| How does the frequency change when the source and observer are getting closer together? When they are moving farther apart? |
closer together: higher frequency
farther apart: lower frequency |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is the Doppler Effect? |
The change in frequency due to a moving source, observer, or both |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What are sound above the range of human hearing called? |
ultrasonic |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What are sounds below the range of human hearing called? |
infrasonic |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| How does the speed of sound change with temperature? |
faster in high temperature, slower in low temperature |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is range of human hearing? |
20-20,000 hz |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What does frequency correspond to when we experience sound? |
pitch |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What is the typical speed of sound in air at room temperature? |
340 m/s |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What type of medium does sound travel the fastest? The slowest? |
fastest in a solid, slowest in a gas |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What determines the speed of sound? |
the medium it travels through |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What are the points of high pressure and low pressure of a sound wave called? |
compressions and rarefactions |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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| What type of wave is sound? |
longitudinal |
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noblejas Tue, 19 Feb 2008 16:46:21 GMT |
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