How many people live in places with bad air quality?

Grade level: 3rd – 5th grades

Skills: Percentage

Related environmental issues: Air quality

The World Health Organization (WHO) reported that 92% of the world’s population lives in places that are below the air quality standard. As air quality declines, the risk of diseases such as stroke, heart disease, lung cancer, and asthma increases for the people who live in the area.

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Air quality map — Areas in red have hazardous air quality

 

 

Suppose your school has 100 children in your grade and 92% of them lives in places that are below the air quality standard.

  1. Our of 100 children, how many children live in places that are below the air quality standard?
  2. Our of 100 children, how many children live in places that are above the air quality standard?

 

Sources: WHO, Media Center

WHO, Global ambient air pollution (Interactive map)

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Answer keys

1. 92

2. 100 – 92 = 8

 

 

People in what state emitted the most CO2 to generate electricity?

Grade level: 3rd – 4th grades

Skills: Bar graph 

Related environmental issues: Climate Change

The United States depend on fossil fuels (coal, natural gas, and petroleum) for electricity generation. When burned, fossil fuels emit carbon dioxide (CO2).  The bar graph below shows the five states that emitted the most carbon dioxide per person from the use of fossil fuels in the United States in 2015.

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  1. Which state emitted the most CO2 per person from burning fossil fuels?
  2. Because of dependence of fossil fuels, which state emitted more CO2 per person, North Dakota or Alaska ?
  3. How many states emitted more than 60 metric tons of CO2 per person by the use of fossil fuels?

 

Sources: U.S. Energy Information Administration, Energy-Related Carbon Dioxide Emission by State, 2000-2015 (Table 5) 

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Answer keys

1. Wyoming

2. North Dakota

3. Two states