Which zone lies above the water table and contains air as well as water, not fully saturated?

Which zone lies above the water table and contains air as well as water, not fully saturated?

• A. Unsaturated zone
• B. Saturated zone
• C. Aquifer
• D. Well

Answer: (A)

In groundwater, pore spaces can hold air or water. The water table marks the boundary between two parts: above it, the pores are not completely full, so air is present along with some water. This is the unsaturated zone, also called the zone of aeration, where moisture exists but the spaces aren’t fully saturated with water. Below the water table, the pores are completely filled with water, which is the saturated zone. An aquifer is a permeable layer that stores and transmits groundwater and is typically part of the saturated zone, while a well is just a man-made opening to access groundwater. So the zone above the water table containing both air and water, not fully saturated, is the unsaturated zone.

In groundwater, pore spaces can hold air or water. The water table marks the boundary between two parts: above it, the pores are not completely full, so air is present along with some water. This is the unsaturated zone, also called the zone of aeration, where moisture exists but the spaces aren’t fully saturated with water. Below the water table, the pores are completely filled with water, which is the saturated zone. An aquifer is a permeable layer that stores and transmits groundwater and is typically part of the saturated zone, while a well is just a man-made opening to access groundwater. So the zone above the water table containing both air and water, not fully saturated, is the unsaturated zone.