Essay Quiz


1		What is a wave?



2		Is it possible for a transverse wave to move through air? Explain.



3		A piano tuner hears three beats per second when a tuning fork and a note are sounded together and six beats per second after the string is tightened. What should the tuner do next, tighten or loosen the string? Explain.



4		Why do astronauts on the moon have to communicate by radio even when close to one another?



5		What is resonance?



6		Explain why sounds travel faster in warm air than in cool air.



7		Do all frequencies of sound travel with the same velocity? Explain your answer by using one or more equations.



8		What eventually happens to a sound wave traveling through the air?



9		What gives a musical note its characteristic quality?



10		Does a supersonic aircraft make a sonic boom only when it cracks the sound barrier? Explain.



11		What is an echo?



12		Why are fundamental frequencies and overtones also called resonant frequencies?

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