Can you spread the load on an aquifer by extracting from more wells distributed over a wider area?
Initially, water is driven underground by gravity. What is the main driver after a certain depth?
Why do people favour groundwater to surface water sources?
When bacteria in the soil interacts with organic compounds in the water, what are they broken down into?
What do we call the water-bearing layer underground?
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?
Test results
Congratulations. You have passed the test and completed the 92 - Understanding our groundwater
Achieved badges:
Q: Can you spread the load on an aquifer by extracting from more wells distributed over a wider area?
A: Yes
Q: Can you spread the load on an aquifer by extracting from more wells distributed over a wider area?
A: No
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: Why do people favour groundwater to surface water sources?
A: Access to surface water is often limited for many due to land ownership
Q: Why do people favour groundwater to surface water sources?
A: They don't - lakes and rivers provide a much more reliable supply
Q: Why do people favour groundwater to surface water sources?
A: The cleaning effect from filtration through the subsurface makes groundwater much safer
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 do we call the water-bearing layer underground?
A: An aquifer
Q: What do we call the water-bearing layer underground?
A: A water tank
Q: What do we call the water-bearing layer underground?
A: A well
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