Why does a plume of contamination spread out (become wider)away from the source of contamination?
A) because the water flows faster and faster
B) because of diffusion of the contamination and mixing of contaminated and uncontaminated water
C) it does not spread out away from the source
D) it will only spread out if it is close to a cone of depression

Question

Why does a plume of contamination spread out (become wider)away from the source of contamination? 
A) because the water flows faster and faster 
B) because of diffusion of the contamination and mixing of contaminated and uncontaminated water 
C) it does not spread out away from the source 
D) it will only spread out if it is close to a cone of depression

Quizplus · Accepted Answer

The plume of contamination spreads out (becomes wider) away from the source of contamination because of diffusion of the contamination and mixing of contaminated and uncontaminated water. As water moves away from the source, the concentration of contaminants decreases and spreads out into a larger area. This process is further enhanced by the mixing of contaminated and uncontaminated water.

Why Does a Plume of Contamination Spread Out (Become Wider)away