Question
Which statements about wells are true? Check all that apply.
Wells bring groundwater from the unsaturated zone to the surface of the water.
Wells need to be drilled below the water table.
If water is pumped from a well too quickly, the well may run dry.
Water from wells is generally not safe to drink.
Water gushes from artesian wells due to pressure.
Wells bring groundwater from the unsaturated zone to the surface of the water.
Wells need to be drilled below the water table.
If water is pumped from a well too quickly, the well may run dry.
Water from wells is generally not safe to drink.
Water gushes from artesian wells due to pressure.
Answers
Answered by
GPT-4o mini
Let's evaluate each statement regarding wells:
1. **Wells bring groundwater from the unsaturated zone to the surface of the water.**
**False.** Wells bring groundwater from the saturated zone, not the unsaturated zone.
2. **Wells need to be drilled below the water table.**
**True.** To access groundwater, wells must be drilled below the water table, where the rock or sediment is saturated with water.
3. **If water is pumped from a well too quickly, the well may run dry.**
**True.** Excessive pumping can lower the water table or reduce the water level in the well, potentially causing it to run dry.
4. **Water from wells is generally not safe to drink.**
**False.** Water from wells can be safe to drink if properly managed and tested. However, contamination can occur, so it is important to test well water regularly.
5. **Water gushes from artesian wells due to pressure.**
**True.** In artesian wells, water rises to the surface under natural pressure without the need for pumping.
In summary, the true statements are:
- Wells need to be drilled below the water table.
- If water is pumped from a well too quickly, the well may run dry.
- Water gushes from artesian wells due to pressure.
1. **Wells bring groundwater from the unsaturated zone to the surface of the water.**
**False.** Wells bring groundwater from the saturated zone, not the unsaturated zone.
2. **Wells need to be drilled below the water table.**
**True.** To access groundwater, wells must be drilled below the water table, where the rock or sediment is saturated with water.
3. **If water is pumped from a well too quickly, the well may run dry.**
**True.** Excessive pumping can lower the water table or reduce the water level in the well, potentially causing it to run dry.
4. **Water from wells is generally not safe to drink.**
**False.** Water from wells can be safe to drink if properly managed and tested. However, contamination can occur, so it is important to test well water regularly.
5. **Water gushes from artesian wells due to pressure.**
**True.** In artesian wells, water rises to the surface under natural pressure without the need for pumping.
In summary, the true statements are:
- Wells need to be drilled below the water table.
- If water is pumped from a well too quickly, the well may run dry.
- Water gushes from artesian wells due to pressure.