Do we use more water for toilet or shower?

Grade level:  5 – 6th grades

Skills: Circle graphs

Related environmental issues: Water

The circle graph below shows how the average American family uses water at home.

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1. For what purposes does the average American family use the most water?

2. For what purposes does the average American family use more water, shower or washing machine?

3. The average American family uses 300 gallons of water a day. How many gallons of water does the average American family use for shower?

4. The average American family loses a lot of water to leaky toilets, appliances and faucets. What percentage of water is wasted through leaks?

5. How many gallons of water does the average American family lose through leaks a day?

Sources: U.S. Environmental Protection Agency, 2018. How We Use Water

To find and fix water leaks, visit here (Water Footprint, 2018. Indoor Water Leaks)

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Answer keys

  1. Toilet
  2. Shower
  3. 300 x 0.2 = 60 (gallons)
  4. 100 – 24 – 20 – 19 – 17 – 8 = 12 (%)
  5. 300 x 0.12 = 36 (gallons)

What country is the World’s largest producer of CO2?

Grade level: 4th – 6th grades

Skills: Circle graph

Related environmental issues: Climate Change

The circle graph below shows how much carbon dioxide (CO2) was emitted from the world’s top five CO2-emitting countries in 2015.

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  1. What country emitted the largest amount of CO2 in the world?
  2. India emitted half as much CO2 as the United States.  What percentage of the world’s CO2 did India emit in 2015?
  3. European Union emitted twice as much CO2 as Russia.  What percentage of the world’s CO2 did European Union emit in 2015?
  4. Together, what percentage of the world’s CO2 did the rest of the countries emit?

Sources: Netherlands Environmental Assessment Agency“CO2 time series 1990-2015 per region/country”

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Answer keys

1. China

2. 7%

3. 10%

4. 100 – 29 – 14 – 10 – 7 – 5 =  35%