Aquifers: Porosity and Specific Yield

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What is specific yield in aquifers?

The thickness of the aquifer

The quantity of water yield released from the aquifer (correct)

The volume of voids in the aquifer

The area and thickness to store water in the aquifer

Which factor does NOT affect hydraulic conductivity?

Weathering

Median grain size

Specific yield (correct)

Sorting

What material has the highest porosity?

Gravel

Sand

Clay (correct)

Soil

What does hydraulic transmissivity measure?

The rate at which water passes through an aquifer under a hydraulic gradient Signup and view all the answers

What is specific retention in aquifers?

What is left behind after water has drained from the aquifer Signup and view all the answers

Which factor affects hydraulic conductivity related to the material itself?

Specific gravity Signup and view all the answers

What are the two main natural sources of groundwater recharge mentioned in the text?

Surface water and precipitation Signup and view all the answers

What is one consequence of taking out more water from an aquifer than what gets replenished?

Salt water or contaminant intrusion Signup and view all the answers

What is the residence time of groundwater, as mentioned in the text?

2 weeks to 10,000 years Signup and view all the answers

What can result from over-pumping or over-drafting an aquifer?

Reduction of water in streams and lakes Signup and view all the answers

What are some causes of groundwater contamination according to the text?

Drainage from abandoned mines Signup and view all the answers

What are some benefits of groundwater mentioned in the text?

Lower temperature and constant water quality Signup and view all the answers

Aquifers: Porosity and Specific Yield

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Questions and Answers

What is specific yield in aquifers?

Which factor does NOT affect hydraulic conductivity?

What material has the highest porosity?

What does hydraulic transmissivity measure?

What is specific retention in aquifers?

Which factor affects hydraulic conductivity related to the material itself?

What are the two main natural sources of groundwater recharge mentioned in the text?

What is one consequence of taking out more water from an aquifer than what gets replenished?

What is the residence time of groundwater, as mentioned in the text?

What can result from over-pumping or over-drafting an aquifer?

What are some causes of groundwater contamination according to the text?

What are some benefits of groundwater mentioned in the text?

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