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Material density and sound transmission Featured science projectScience project video

Observation

The higher density materials of glass and marble tile had the lowest noise level and plywood the lowest density material had the highest noise level recorded by the decibel meter.


Source of sound

Density (kg/m3)

Noise level (dB) of siren measured outside the box

Noise outside box with the siren inside the box

Plywood

600

72

62

Bakelite

1250

72

54

Glass

2690

72

42

Marble tile

2560

72

44

The graph below represents the results of our science project experiment.

material density and sound transmission science fair project

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Complexity level:
7
Project cost ($):
80
Time required:
2 days to prepare, 1 hour for observation
Material availability:
Easily found.
Safety concerns:

None