Hypothesis
If the same intensity of a constant sound source is passed through different materials of the same volume but of various densities, then sound waves of less intensity will be transferred through the materials of greater density because the more densely "packed" the materials' molecules are, the less air exists through which sound may travel.
If the same intensity of a constant sound source is passed through different materials of the same volume but of various densities, then sound waves of less intensity will be transferred through the materials of greater density because the more densely "packed" the materials' molecules are, the less air exists through which sound may travel.
Experimental group: The experimental group is the sound waves passing through the varying materials.
Control group: The control group is the initial sound source, as the level of intensity of the sound waves after transmission through the materials will be compared to the level of intensity of this source.
Control group: The control group is the initial sound source, as the level of intensity of the sound waves after transmission through the materials will be compared to the level of intensity of this source.
Independent Variable
The independent variable is the "type of materials" (metal, wood, clay etc.)
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Dependent Variable
The dependent variable is the intensity of the sound waves after passing through different materials.
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Controlled Variables
The controlled variables are the constant sound source, and the volume of the materials.
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