Which materials are known to absorb sound effectively?

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The effectiveness of materials at absorbing sound greatly depends on their physical properties, such as density, porosity, and surface texture. Rubber, cork, and acoustic tiles are specifically designed to absorb sound waves due to their unique characteristics.

Rubber, for example, is elastic and can dampen vibrations, which contributes to its sound-absorbing qualities. Cork is a natural material that is highly porous, allowing it to trap sound waves and reduce noise levels effectively. Acoustic tiles are engineered for sound absorption; they typically have specialized surfaces that help to minimize echo and reverberation in a space.

In contrast, wood and glass have different sound interaction properties. While they can reflect sound rather than absorb it, they are not as efficient at minimizing noise. Metals and plastics, being rigid and dense materials, tend to reflect rather than absorb sound. Stone and brick, while solid and substantial, are also more reflective than absorptive, making them less effective in controlling sound in a space.

Therefore, the combination of rubber, cork, and acoustic tiles provides the best sound absorption characteristics among the given options, making them the correct answer.

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