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Graphing a <strong>Sound</strong> Wave. <strong>Sound</strong> as a pressure wave The variation of pressure with distance is a useful way to represent a sound wave graphically. But remember – sound is actually a longitudinal wave.
Check your understanding A sound wave is a pressure wave; regions of high pressure (compressions) and low pressure (rarefactions) are established as the result of the vibrations of the sound source. These compressions and rarefactions result because sound a. is more dense than air and thus has more inertia. b. waves have a speed that is dependent only upon the properties of the medium. c. can be diffracted around obstacles. d. vibrates longitudinally; the longitudinal movement of air produces pressure fluctuations.
Page 1 and 2: Sound
Page 3 and 4: If a tree falls in a forest, and th
Page 5 and 6: Review: Sound is a mechanical wave
Page 7: When a tuning fork vibrates, it cre
Page 11 and 12: Frequency of Sound Example A guitar
Page 13 and 14: Frequency of Sound • The human ea
Page 15 and 16: Intensity Intensity: the rate at wh
Page 17 and 18: Intensity is caused by the Amplitud
Page 19 and 20: The Decibel Scale On the decibel sc

Sound

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