33 Sound Waves - is initially a high pitch but, over time,...

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If a tree falls in the forest and there’s no one there to hear it, does it make a sound? a) Yes b) No
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A particular molecule in a sound wave is traveling at its maximum speed. What can be said about the pressure on this molecule? a) It is at a maximum. b) It is at a minimum. c) It is in between the max and min. d) More information is needed.
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You are standing 1m away from a lawn mower and hear the engine at an intensity of 100dB. If you move away so that you are 10m from the lawn mower, what will the new intensity be? a) 99dB b) 98dB c) 50dB d) 10dB e) 5dB f) 1dB
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You are in a train station and hear a long train whistle. You notice that the frequency
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Unformatted text preview: is initially a high pitch but, over time, becomes a low pitch. What has happened? a) The train has moved closer to the station. b) The train has traveled past the station. c) The train has moved away from the station. d) The train whistle must be able to make different sounds. You are driving 30m/s. Two horns blow at 600Hz: one by a pedestrian behind you, the other by a car moving head-on at 40m/s. What is the difference between the two frequencies you hear?...
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33 Sound Waves - is initially a high pitch but, over time,...

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