yes.glass wool is one of the sound absorbing material while ground glass is not.
Believe it or not wool is a solid. Its fibers vibrate when sound approaches it therefor the vibrations are used up and there is less sound coming out from the other end of the wool fiber. (I'm Not Sure If Its Al Right But I Do Know that wool does absorb sound and It Can Be Used In Ear Defenders Or Ear Muffs To Cancel Out Noise).
Yes
Yes
glass wool
In clear unobstructed air sound can be heard very clearly, very far away. When sound encounters glass wool or any other obstruction then sound is slowed down to a great degree or stoped altogether.
Anything which slows or stops sound from leaving the room is a good sound suppressant or insulator. Wool, thick lumps of Wood, or several panes of glass separated by an air gap are examples
yes,its fire retardant and sound proof material also
rock wool is made out of rock and glass wool is made out of glass
pu foam
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.
Don't know about warter, but wool does absorb water.