3. You have a frustrating day and just feel like screaming; you grab a pillow to scream into it. Which interaction of sound would take place here, (reflection, refraction or absorption), and how did the sound waves move?

Question

3.	You have a frustrating day and just feel like screaming; you grab a pillow to scream into it. Which interaction of sound would take place here, (reflection, refraction or absorption), and how did the sound waves move?

anonymous · Answer

So a reflection is simply summarized as $$\theta _{i}=\theta _{f}$$ essentially the angle has not changed. a refraction is when the sound wave travels through a new medium changing its wavelength. An absorption is a pretty self explanatory, a portion of the sound wave is lost.  Knowing that, which do you think it is?