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Sound waves are a form of energy, so that energy may only be converted into another form. Energy can neither be created or destroyed in normal conditions.

Sound waves may be converted to heat, if the sound waves can move a material.

Glass fibre absorbs sound because the fibres are very small, and may be moved slightly by the sound. This converts some of the sound energy to heat.

In ordinary circumstances, you may consider that solid glass does not absorb sound. In fact it will absorb a little - a fraction of a percent, but that we may ignore.

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14y ago

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