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Comm Diss 311-page8 - 1., pressure(Yep...

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Comm‐Dis 311 True‐False Practice Test for Exam 1. 1. All other things being equal, higher density of molecules is associated with higher pressure. (Yep) 2. The high‐pressure phase of a waveform is the rarefaction phase. (Nope, condensation phase) 3. The low‐pressure phase of a waveform is known as the spectral phase. (Nope, rarefaction phase) 4. The molecules of air move back and forth in the same direction that the sound wave is traveling. (Yep) 5. The molecules of air travel from the source of the sound to the receiver of sound. (Nope, they vibrate more or less in place, only the disturbance moves) 6. Sound travels faster than air than it does in solids. (Nope, much faster in the less elastic system). 7. A plot of amplitude over time is known as a waveform.
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