How did this cone of depression in the groundwater form?
A)an artesian spring flowed upward on all sides
B)the earth's rotation causes groundwater to twirl in a counter-clockwise direction
C)groundwater is pumped from the well faster than it can flow to replenish what is lost
D)clay horizons cause perched water to flow away from a central point

Question

How did this cone of depression in the groundwater form? 
A)an artesian spring flowed upward on all sides 
B)the earth's rotation causes groundwater to twirl in a counter-clockwise direction 
C)groundwater is pumped from the well faster than it can flow to replenish what is lost 
D)clay horizons cause perched water to flow away from a central point

Quizplus · Accepted Answer

A cone of depression forms when groundwater is pumped out of a well faster than it can be replenished by natural water sources such as rainfall or streams. This causes a lowering of the water table in the surrounding area, creating a cone-shaped depression. Option A is incorrect because an artesian spring would cause water to flow outward, not upward on all sides. Option B is incorrect because the earth's rotation does not directly affect the movement of groundwater. Option D is incorrect because perched water occurs when a layer of impermeable material separates two layers of groundwater, causing water to accumulate on top of the impermeable layer, rather than flowing away from a central point.

How Did This Cone of Depression in the Groundwater Form