A confined aquifer is a ______ of rock that is ______ that is (are) relatively ______.

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Prepare for the Washington State WDM 1 with flashcards, multiple choice questions, hints, and explanations. Get exam ready now!

Multiple Choice

A confined aquifer is a ______ of rock that is ______ that is (are) relatively ______.

Explanation:
A confined aquifer is a permeable layer of rock or sediment that is trapped between upper and lower impermeable layers. Those bounding layers limit vertical movement, so the water within is under pressure and mainly moves horizontally. This setup—a permeable layer confined by impermeable boundaries—matches the description of being relatively impermeable to vertical flow while still allowing horizontal flow, which is why that option is the correct one.

A confined aquifer is a permeable layer of rock or sediment that is trapped between upper and lower impermeable layers. Those bounding layers limit vertical movement, so the water within is under pressure and mainly moves horizontally. This setup—a permeable layer confined by impermeable boundaries—matches the description of being relatively impermeable to vertical flow while still allowing horizontal flow, which is why that option is the correct one.

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