Hard materials such as brick walls tend to block sound waves while soft materials such as a thick carpet tend to absorb sound waves.
What are sound waves?A sound wave is defined as the pattern of disturbance which is caused by the movement of energy traveling through a medium as it propagates away from the source of the sound.
Sound waves are created by object's vibrations and produce pressure waves, for example, a ringing cellphone. The pressure wave disturbs the particles present in the surrounding medium, and those particles disturb others present next to them, and so on.
The pattern of the disturbance creates outward movement in a wave pattern, like sea water in the ocean. The wave carries the sound energy through the medium, usually in all directions and less intensely as it moves farther from the source.
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