Properties of Sound Waves — Unit test Answers
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Consider the intensities of the sounds listed below.
A
busy roadway, kids whispering, average homeB
chainsaw, diesel truck, rustling leavesC
kids whispering, vacuum cleaner, jet airplaneD
library, conversational speech, music from speaker22
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A
absorbedB
transmittedC
reflectedD
refracted23
Which change will decrease the speed of a sound wave traveling through a gaseous matter?
A
replacing the gaseous matter with a liquidB
replacing the gaseous matter with a solidC
decreasing the temperature of the matterD
increasing the temperature of the matter24
A marching band is practicing. The band director sees the drum major hit a drum. How far away is the director if he hears the drumbeat in 0.40 seconds? The speed of sound is 330 m/s.
A
12 mB
132 mC
264 mD
825 m25
A tuning fork is vibrating the air around it. What best describes the waves produced by the tuning fork?
A
mechanical, because the air molecules are moving perpendicular to the tuning forkB
mechanical, because the vibrating tuning fork makes air molecules around it vibrateC
electromagnetic, because the air molecules are moving parallel to the tuning forkD
electromagnetic, because the vibrating tuning fork does not need air in order to produce soundDid you find these answers helpful?
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