Question

which of the following statements concerning artesian wells is not true? group of answer choices the well penetrates an aquifer overlain by an aquitard the well penetrates an aquifer underlain by an impermeable bed the aquifer is generally inclined, and it is saturated to an elevation above the point where the well penetrates the aquifer when the well penetrates the aquifer, the groundwater reverses flow such that the water table drops in the well

Answer 1

An artesian well involves water being naturally pushed up from an inclined aquifer between impermeable layers. The incorrect statement about artesian wells is that penetrating the aquifer makes the groundwater reverse flow and causes the water table to drop in the well.

Step-by-step explanation:

The question is asking which statement about artesian wells is not true. An artesian well typically involves an aquifer that is confined between an impervious layer, known as an aquitard, below and an impermeable bed above. The aquifer must be inclined, or tilted, allowing it to be filled with water at a higher elevation than the point at which the well penetrates the aquifer.

This creates pressure that can force water up the well without pumping, known as the potentiometric surface. However, when an artesian well is penetrated, the water that flows to the surface does not cause the groundwater to reverse flow or the water table to drop in the well. The incorrect statement is thus: 'When the well penetrates the aquifer, the groundwater reverses flow such that the water table drops in the well'.