Regarding sound waves, which of the following statements is TRUE?
A)Sound waves are produced by vibrating objects.
B)The amplitude is the number of sound waves per second and corresponds to the perceived pitch of a sound.
C)Compressions are the valleys within the sound waves.
D)Rarefactions are the peaks within the sound waves.

Question

Quizplus · Accepted Answer

A) Sound waves are indeed produced by vibrating objects. The vibration causes the air particles around the object to move, creating sound waves. B) is incorrect because amplitude refers to the maximum extent of a vibration or oscillation, measured from the position of equilibrium, and it corresponds to the loudness of the sound, not the pitch. Pitch is related to the frequency of the sound waves. C) and D) are incorrect because compressions are the regions of high pressure where particles are close together, not valleys, and rarefactions are the regions of low pressure where particles are spread apart, not peaks.

Regarding Sound Waves, Which of the Following Statements Is TRUE