A builder wants to make a room soundproof in a new home. The builder should use materials that

O absorb sound waves and prevent echoes

O reflect sound waves and create echoes

O reflect sound waves and prevent echoes

O absorb sound waves and create echoes

The builder should use materials that absorb sound waves and prevent echoes.

Well, if the builder wants to make a room soundproof, they should definitely use materials that absorb sound waves and prevent echoes. We don't want any echoes bouncing around like a bunch of party animals, do we? Let's make sure those sound waves behave themselves and stay absorbed!

The correct answer is:

O absorb sound waves and prevent echoes

When soundproofing a room, the builder should use materials that absorb sound waves and prevent echoes. This helps to minimize the amount of sound that enters or leaves the room, creating a quieter and more comfortable space. Materials such as acoustic panels, insulation, heavy curtains, or soundproof wallpapers can be used to absorb sound waves and minimize reflection, thus preventing echoes.

To make a room soundproof, the builder should use materials that absorb sound waves and prevent echoes.

Soundproofing involves minimizing the transmission of sound from one area to another. When sound waves encounter a surface, they can be either absorbed or reflected. The goal is to minimize the reflection of sound waves, as this can cause echoes and allow sound to escape the room.

Materials that absorb sound waves are effective in reducing echoes and preventing sound from bouncing around the room. These materials convert sound energy into heat energy, reducing the overall sound level. Examples of sound-absorbing materials include acoustic foam panels, fibreglass insulation, heavy curtains, and carpets.

On the other hand, materials that reflect sound waves can create echoes and allow sound to escape. Reflective surfaces like hard walls, polished tiles, and metal can amplify sound and cause reverberation.

Therefore, the correct answer is:

A builder should use materials that absorb sound waves and prevent echoes.