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Mini-Quiz: Sound Created from a String or Wire

by Ron Kurtus (revised 12 March 2012)

Take this Mini-Quiz to check your understanding of the lesson material.



1. If the string must be pulled tight, how can it vibrate?

The material will stretch and then bounce back

You must loosen the string so it can vibrate

No one is really sure what happens when it vibrates

2. How does a vibrating wire create sound?

Vibrating wires cannot create sound; only vibrating strings create sound

The regular movement of the wire causes a vibration in the air at the same frequency

The vibrations of the wire is the sound, and you must put your ear to it to hear the sound

3. What are possible higher harmonics of a string with a fundamental of 330 Hz?

660 Hz, 1320 Hz, 1980 Hz

340 Hz, 350 Hz, 360 Hz

165 Hz, 330 Hz, 660 Hz

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.


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