How is a rising sea level a problem for coastal communities?
Initially, water is driven underground by gravity. What is the main driver after a certain depth?
When bacteria in the soil interacts with organic compounds in the water, what are they broken down into?
What happens if groundwater is depleted too fast?
In the example given in the course, how many years will it take potentially for the effects of surface pollution to show up in drinking water?
Is climate change a significant problem for our groundwater?
Test results
Congratulations. You have passed the test and completed the 92 - Understanding our groundwater
Achieved badges:
Q: How is a rising sea level a problem for coastal communities?
A: Because of saltwater intrusion into the coastal aquifers
Q: How is a rising sea level a problem for coastal communities?
A: It isn't - as long as the aquifer is healthy, there will always be enough pressure to hold back the seawater
Q: How is a rising sea level a problem for coastal communities?
A: It is actually a positive, because there will be greater pressure in wells further inland
Q: Initially, water is driven underground by gravity. What is the main driver after a certain depth?
A: The main driver becomes pressure
Q: Initially, water is driven underground by gravity. What is the main driver after a certain depth?
A: The main driver is still gravity
Q: Initially, water is driven underground by gravity. What is the main driver after a certain depth?
A: Both pressure and gravity, depending on conditions
Q: When bacteria in the soil interacts with organic compounds in the water, what are they broken down into?
A: Pollutants in the water
Q: When bacteria in the soil interacts with organic compounds in the water, what are they broken down into?
A: Nothing - this process happens on the surface
Q: When bacteria in the soil interacts with organic compounds in the water, what are they broken down into?
A: Pure water and CO2
Q: What happens if groundwater is depleted too fast?
A: The land subsides and a shallow lake forms
Q: What happens if groundwater is depleted too fast?
A: The land subsides and dries out
Q: What happens if groundwater is depleted too fast?
A: Water pressure drops, but in principle the aquifer is always there
Q: In the example given in the course, how many years will it take potentially for the effects of surface pollution to show up in drinking water?
A: 4 to 5 years
Q: In the example given in the course, how many years will it take potentially for the effects of surface pollution to show up in drinking water?
A: Over a thousand years
Q: In the example given in the course, how many years will it take potentially for the effects of surface pollution to show up in drinking water?
A: 40 to 50 years
Q: Is climate change a significant problem for our groundwater?
A: No
Q: Is climate change a significant problem for our groundwater?
A: Yes
Q: Is climate change a significant problem for our groundwater?
A: We won't know for 40 to 50 years