The natural property of the material has that ability. Alot of objects absorb wound, for example the sides of your stereo are sound insulators. However, not all have the same or even this ability at all. As for soft and rough, they most likely won't play a factor, therefore you should look into the material of objects to possibly determine the insulation of sound.
Since sound reflects off of soft surfaces better, it can reflect off of metal, walls, wood, paper, and a bunch of more soft surfaces.
Usually, stuff that is soft will absorb sound.answ2. Sound is a vibration of air molecules, and anything that may be made to absorb energy from the molecules will absorb sound. If the material has soft fibres, and can allow the sound to penetrate easily, (is porous) then the collision of sound molecules with the fibres, will transfer the energy from the molecules to the inelastic fibres, where it will be dissipated as heat.
Soft surfaces absorb quite a lot of the energy (by deforming) that the ball uses to spring back up, whereas hard surfaces don't absorb that energy (because they don't deform), and so the energy is used to deform the ball, which is then converted back into kinetic energy and the ball bounces.
Because there is nothing to 'absorb' the sound, echo's are basically a sound reflected by it hitting a surface, if you walked into a house with nothing in it, just the walls, floorboards or concrete floor and ceilings then the sound echos because there are no soft things or cushiony things to absorb the sound and stop it reflecting.
This is because sound travels in waves and rebounds off the hard mountains to reach your ears again. There are limited soft objects that absorb the sound, and therefore an echo occurs. This is the reason why you usually only hear a single echo.
Since sound reflects off of soft surfaces better, it can reflect off of metal, walls, wood, paper, and a bunch of more soft surfaces.
An echo is formed by sound waves bouncing back off of solid surfaces. The greatest effect happens in small empty rooms with few or no soft furnishings. Soft furnishings absorb sound waves and so would counteract the effect.
Usually, stuff that is soft will absorb sound.answ2. Sound is a vibration of air molecules, and anything that may be made to absorb energy from the molecules will absorb sound. If the material has soft fibres, and can allow the sound to penetrate easily, (is porous) then the collision of sound molecules with the fibres, will transfer the energy from the molecules to the inelastic fibres, where it will be dissipated as heat.
because it is soft,rough,white and is shown clearly when writing
Soft surfaces absorb quite a lot of the energy (by deforming) that the ball uses to spring back up, whereas hard surfaces don't absorb that energy (because they don't deform), and so the energy is used to deform the ball, which is then converted back into kinetic energy and the ball bounces.
The tecnique or method used to absorb undesireable sounds by soft and porous surfaces is called Acoustic protection
This much depends on the properties of the plastic. Foam will reflect little and absorb much. Hard plastic will reflect much and absorb little. Soft plastic will absorb more than hard plastic and reflect more than foam. Regards.
Soft surfaces may dampen the reflection of sound waves, but soft tiles are not the only way to improve the sound performance of a surface. The shape of the surface, thickness of the material, and material type are all important.
Because there is nothing to 'absorb' the sound, echo's are basically a sound reflected by it hitting a surface, if you walked into a house with nothing in it, just the walls, floorboards or concrete floor and ceilings then the sound echos because there are no soft things or cushiony things to absorb the sound and stop it reflecting.
rough
SOFT
Rough or hard is not soft.