Reflection, Diffusion, Absorption of Sound
Presentation
•
Physics
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6th - 8th Grade
•
Practice Problem
•
Medium
Marc Barrett
Used 7+ times
FREE Resource
4 Slides • 3 Questions
1
2
When a sound wave hits an irregular surface like foam or carpet, the vibration breaks up and travels along many much smaller paths. This divides the energy of the wave, sending it in many different directions which depletes its energy faster. Take a look at these diffusers available on Amazon. What do they all have in common?
3
Multiple Choice
Select the image below of the material that is most likely to be able to diffuse sound.
4
Sound is bounced off a surface. This usually occurs on flat, rigid surfaces with a lot of mass like concrete or brick walls. Because the sound wave can't penetrate very far into the surface, the wave is turned back on itself like a ricochet. The sound bouncing back off the surface creates an echo.
5
Multiple Choice
Which of these images would be BEST at reflecting sound?
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7
Multiple Choice
More dense materials are better at absorbing sound than less dense materials. True or false?
True
False
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