Question

Which statements would make the diagram correct?

X: contains the water table
Y: found between impermeable rock
X: contains the water table
Y: has water under pressure
X: found between impermeable rock
Y: contains the water table
X: has upper surface of water at atmospheric pressure
Y: has water under pressure

Answer 1

Select the statements that describe X as an unconfined aquifer and Y as a confined (artesian) aquifer:

- X: contains the water table
- X: has upper surface of water at atmospheric pressure
- Y: found between impermeable rock
- Y: has water under pressure

(Explanation: X is unconfined so its upper surface is the water table at atmospheric pressure; Y is confined between impermeable layers so its water is under pressure.)