Problem: 1. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? A. Refracting B. Focusing C. Absorption D. Diffusion 2. The spreading of sound waves around openings in barriers is called A. refraction. B. an echo. C. reverberation. D. diffraction. 

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1.

Travelling of a wave from one medium to another is referred to as refraction. 

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Problem Details

1. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? 

A. Refracting 

B. Focusing 

C. Absorption 

D. Diffusion 


2. The spreading of sound waves around openings in barriers is called 

A. refraction. 

B. an echo. 

C. reverberation. 

D. diffraction.