Grade level: 4-5th grades

Skills: Pie graphs (with decimals)

Related environmental issues: Water

National Ground Water Awareness Week is an annual observance to increase public awareness of importance of groundwater. The United States depends about 20% of  national water from groundwater.  Groundwater is used for many important purposes. The pie graph below shows how groundwater is used in the nation.

1.For what purpose is groundwater used the most?

2.For what purpose is the third smallest amount of groundwater used?

3.Fill in the blank.       _________ uses twice as much groundwater as livestock farming.

4. How many more percentage of groundwater does homes, schools & businesses use than fish farming?

Source: U.S. Geological Survey

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Answer keys

1.agriculture

2.electricity generation

3.industry

4. 19.9% (22.2 – 2.3 = 19.9)