What Materials Reflect Sound?

Answer

When a sound wave meets an obstacle, some sound is reflected back while some is absorbed. Materials that reflect sound best are rigid, smooth and non-porous. Materials that absorb most sound are soft and porous and they are used for sound proofing.
Q&A Related to "What Materials Reflect Sound?"
The best reflecting material is the most shiny material, may be glass.
http://wiki.answers.com/Q/What_is_the_best_reflect...
Sounds interesting (sorry! Something flat, smooth, hard and solid. Glass would be good, or MDF with a laminate coating.
http://answers.yahoo.com/question/index?qid=200807...
Sound travels faster in denser objects. And iridium and osmium are the densest elements found on earth. answ2. But the speed of sound in a simple solid depends upon its 'elasticity'
http://wiki.answers.com/Q/What_material_does_sound...
Trick question. Short answer.Audio waves.
http://wiki.answers.com/Q/What_Sound_energy_is_abs...
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