Why do we use more water in summer than in winter?

Grade level:  3rd – 5th grades

Skills: Line graphs

Related environmental issues: Water

The line graph below shows the average daily household water use per person in California in 2016.

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  1. In what season did a person in California use the largest amount of water?
  2. On average, a person in California used 85 gallons of water per day in 2016. In what months, did average Californians use about 85 gallons of water per day?
  3. In which month did a person in California use less amount of water per day, January or December?
  4. Between which two consecutive months did average water use increase the most?
  5. People use the largest amount of water in July and August in most of the states. Why do you think more household water is needed in those months?  Select all of the answers that apply. A) Rising outdoor water use for lawn and landscape watering B) Running the water to avoid freezing water pipes C) Increasing water use for outdoor water activities

 

Sources: California Water Boards, 2017. Fact Sheet (February 8, 2017)

 

Answer keys

  1. summer
  2. May
  3. January
  4. May and June
  5. A and C

 

For what purposes does the United States use the most water?

Grade level:  3rd – 5th grades

Skills: Bar graphs

Related environmental issues: Water

The bar graph below shows how much and for what purposes our water resources are used in this country a day.

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  1. For what purposes does our country use the most water?
  2. True of false: Our country uses the second most water for irrigation.
  3. For what purposes does our country use about as much as one-fifth of water for electricity generation?
  4. For which purposes does our country use less water, for industry or for schools, businesses & houses?
  5. About how much of water in billion gallons is used for irrigation and electricity generation purposes in a day in this country?

Sources: U.S. Geological Survey

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Answer keys

  1. For electricity generation
  2. True
  3. School, businesses & houses
  4. Industry
  5. 130 + 200 = 330 (billion gallons a day)