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Water Testing

30 minutes plus 2-hour break and then another 20 minutes
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Students begin this lesson by learning about the water cycle. Then they use the pH scale to test common household substances to learn their pH values. They learn that pure water has a pH of around 7, that anything above this level is considered basic, and that anything below this level is acidic. Students see how certain substances can end up in freshwater resources and cause that water to become too acidic or too basic, which harms living things in the water. They also conduct an experiment to see how water can evaporate and carry pollutants with it. Those pollutants can lead to acid rain, which is extremely harmful. The lesson ends with students hearing a story and discussing actions they can take to help keep our water resources healthy.

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