1.
Which of the following is the LEAST effective method for conserving water in a residential setting?
Correct Answer
C. Watering the lawn during the hottest part of the day
Explanation
Watering the lawn during the hottest part of the day leads to significant water loss due to evaporation. It is much more effective to water lawns early in the morning or late in the evening when temperatures are cooler and evaporation is minimized. The other options are all recognized water conservation practices that can significantly reduce water usage in a household.
2.
"Ensuring availability of water for the future generations" is a
Correct Answer
C. Goal of water conservation
Explanation
The statement "Ensuring availability of water for the future generations" indicates a long-term objective or aim that water conservation aims to achieve. It highlights the ultimate purpose of conserving water, which is to secure a sustainable water supply for future generations. Therefore, the answer is "Goal of water conservation."
3.
Which of the following uses less water?
Correct Answer
A. Taking a 5 minute shower
Explanation
a 5 minute shower uses 10-25 gallons of water. It does not matter how long you spend in the bath tub. It takes 70 gallons to fill a tub.
4.
Which of the following water conservation techniques is most effective in reducing water usage in agriculture while maintaining crop yields?
Correct Answer
B. Drip irrigation
Explanation
Drip irrigation is the most effective water conservation technique in agriculture. It delivers water directly to the plant's root zone, minimizing evaporation and runoff. This method ensures that water is used efficiently, reducing overall usage while maintaining or even improving crop yields. Unlike flood or furrow irrigation, which can lead to significant water waste, drip irrigation targets water delivery where it's needed most, enhancing both conservation and agricultural productivity.
5.
Easily corrected household water leaks account for what % of the water bill?
Correct Answer
A. 8 %
Explanation
A leaking faucet that drips 1 drip per second can waste up to 3000 gallons of water each year. to test for leaks - read meter before and after a 2 hour period when water is not being used. If the readings do not match exactly, there is a leak.
6.
How much water is saved per flush with a high-efficiency toilet?
Correct Answer
B. 2.2 to 5.7 gallons
Explanation
A toilet from 1992 or earlier is probably an inefficient model that uses between 3.5 to 7 gallons per flush. New high-efficiency models use less than 1.3 gallons per flush. That is 60 to 80 % less water.
7.
A water-efficient irrigation system may include which features?
Correct Answer
D. All of the above
Explanation
Inefficient irrigation systems can waste a great deal of water each month. Look for sprinklers that produce droplets—not mist. Also, systems with rain shutoff devices and moisture sensors reduce excess watering and runoff.
8.
Which one of the following generally accounts for the major use of household water?
Correct Answer
A. Landscaping
Explanation
Landscaping generally accounts for the major use of household water. This is because maintaining a garden or lawn requires regular watering, which can consume a significant amount of water. Showers, washing machines, and dishwashers also contribute to household water usage, but landscaping tends to have a larger impact due to the frequency and volume of water required for irrigation purposes.
9.
Which of the following is a way of conserving water?
Correct Answer
C. Use the washing machine at full load
Explanation
Using the washing machine at full load is a way of conserving water because it maximizes the amount of laundry being washed per cycle, reducing the number of times the machine needs to be run. This helps to minimize water waste and promote water conservation.
10.
Why do we need to conserve water?
Correct Answer
D. It is a limited resource.
Explanation
Water is a limited resource because there is a finite amount of fresh water available on Earth. Although water covers about 70% of the planet's surface, only a small percentage of it is freshwater that is suitable for drinking and other essential uses. With increasing population and industrialization, the demand for water is also growing. Therefore, it is crucial to conserve water to ensure its availability for future generations and to sustain ecosystems that rely on it.