Question

the image shows groundwater zones.
which is the saturated zone?
1 porous rock/soil
2
3 water
4 impermeable rock

Explanation:

Step1: Recall the definition of saturated zone

The saturated zone is the area below the water table where all the pores in the rock or soil are filled with water.

Step2: Analyze each zone

• Zone 1: Porous rock/soil above the water - filled area, not saturated.
• Zone 2: Part of the water - filled area but adjacent to impermeable rock, not the main saturated zone.
• Zone 3: The main body of water - filled pores in the porous medium, which is the saturated zone.
• Zone 4: Impermeable rock, no water in pores in the sense of groundwater saturation.

Answer:

3