Question

what is the effect of distance on the loudness of sound? a as distance from the sound source doubles, the loudness of the sound doubles b distance has no effect on the loudness of sound c as distance from the sound source increases, the loudness of the sound increases d as distance from the sound source increases, the loudness of the sound decreases

Explanation:

Sound spreads out in all directions from a source. As the distance from the source increases, the sound energy is spread over a larger area. This means that the intensity (related to loudness) of the sound decreases. For example, if you move away from a speaker, the sound gets quieter. Option a is incorrect because loudness does not double when distance doubles. Option b is wrong as distance clearly has an effect. Option c is incorrect as increasing distance does not make the sound louder.

Answer:

d. As distance from the sound source increases, the loudness of the sound decreases