cdeutsch/ursuline
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| Why do different objects make different sounds when dropped on the floor? | Because it depends on the elasticity and shape of the object.
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| What are 2 factors that can affect the 'natural' frequency of an object? | Elasticity & shape
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| Give 2 examples of forced vibrations. | tuning fork on a table
a music box on a ledge
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| When does resonance occur? | When the frequency of the forced vibration of an object matches the object's natural frequency.
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| What effect does resonance have on the amplitude of waves? | Resonance increases the amplitude.
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| How did resonance affect the Tacoma Narrows Bridge? | When the natural frequency of the marching soldiers matched the rhythm of the bridge, the bridge collapsed. Wind caused the increasing amplitude to eventually caused the bridge to collapse.
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| Why is it dangerous for people in the balcony to stamp their feet in a steady rhythm? | Because the natural frequency will match with their stomping and cause the balcony to collapse.
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