Question 1 of 6
Basic

Which conditions give water the best cleaning effect on the way to becoming groundwater?

Question 2 of 6
Basic

What happens if groundwater is depleted too fast?

Question 3 of 6
Basic

Can iron be precipitated from water flowing down through the subsurface?

Question 4 of 6
Basic

What do we call the visible area from which the aquifer gets new water over time?

Question 5 of 6
Basic

Initially, water is driven underground by gravity. What is the main driver after a certain depth?

Question 6 of 6
Basic

How is a rising sea level a problem for coastal communities?

Question 6 of 6
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1: Which conditions give water the best cleaning effect on the way to becoming groundwater?
Fast travel time through the subsurface
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1: Which conditions give water the best cleaning effect on the way to becoming groundwater?
Slow travel time through the subsurface
1: Which conditions give water the best cleaning effect on the way to becoming groundwater?
There is no cleaning effect through the subsurface
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2: What happens if groundwater is depleted too fast?
The land subsides and a shallow lake forms
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2: What happens if groundwater is depleted too fast?
The land subsides and dries out
2: What happens if groundwater is depleted too fast?
Water pressure drops, but in principle the aquifer is always there
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3: Can iron be precipitated from water flowing down through the subsurface?
Yes
3: Can iron be precipitated from water flowing down through the subsurface?
No
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4: What do we call the visible area from which the aquifer gets new water over time?
Surface water source
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4: What do we call the visible area from which the aquifer gets new water over time?
The recharge area
4: What do we call the visible area from which the aquifer gets new water over time?
The watershed
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5: Initially, water is driven underground by gravity. What is the main driver after a certain depth?
The main driver becomes pressure
5: Initially, water is driven underground by gravity. What is the main driver after a certain depth?
The main driver is still gravity
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5: Initially, water is driven underground by gravity. What is the main driver after a certain depth?
Both pressure and gravity, depending on conditions
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6: How is a rising sea level a problem for coastal communities?
Because of saltwater intrusion into the coastal aquifers
6: How is a rising sea level a problem for coastal communities?
It isn't - as long as the aquifer is healthy, there will always be enough pressure to hold back the seawater
6: How is a rising sea level a problem for coastal communities?
It is actually a positive, because there will be greater pressure in wells further inland