How does the intensity of a sound wave change if the distance from the source is reduced by a factor of 4?

the answer is that it increases by a factor of 16

Explanation:

conduction, convection, radiation

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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