Thgyg Uyu

Andrea
2._Sound transmission

Sound is transmitted more quickly through solids than through liquids and gas. This is because sound consists of kinetic energy that is transmitted from one moleculeto another. This transfer of kinetic energy occurs more easily if molecules are closer to one another, as in the case of solids or even liquids, rather than in gases. The transmission of sound alsodepends on the elasticity and density of the medium.

The elasticity of materials is a measure of to what extent a medium is able to revert to its original form and shape when a force is applied toit and then removed. A highly inelastic medium like steel will be able to transmit sound more effectively than a highly elastic medium like rubber.

Another factor affecting the transmission of soundis density. High density materials will normally have bigger and heavier molecules. Since larger molecules have a heavier mass, they will require more kinetic energy to vibrate and transmit sound.This will make the transmission of sound slower and dampen the sound.
14.-Sound barriers are used to protect homes that are located near airports, highway and train lines, from noise pollution. Ithelps to improve the quality of life for the people who have been affected by these noise pollutions.

3:-The mass density or density of a material is defined as its mass per unit volume.

Bryan1._Hypothesis
Higher density materials will transmit less sound. The marble would transmit the least amount of sound.

8._In any acoustics phenomenon, there are three essential elements:
(a) soundsource(s),
(b) transmission medi-um(-a), and
(c) recipient(s).
4:_Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound.
15.- lo queaveriguate de las density parecidas al marble

Helena
7.-Material:
Decibel meter
A sound source
Plywood box
Sheet of plywood
Sheet of glass
Sheet of Bakelite
Marble tile
5:-Objective:...