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Science - Earth Science
Standard 4 Objective 2
1 class periods of 60 minutes each
Students will use water quality tests to determine the quality of water collected from local water systems.
Time Required: If collection of water is done on or near school grounds, plan according to distance. Test time in class is about 50 minutes depending on the number of tests being done. Additional time will be needed to analyze results.
There are a variety of water test kits available in most science supply catalogs. The test tablets are easy to use and relatively inexpensive. Which water tests you order depends on your budget and local water supplies. If you have mine tailings nearby you might want to test for heavy metals, if a hog farm is in your vicinity, nitrates and ammonia tests would be appropriate. The Pondwater Tour comes with dissolved oxygen, nitrate, pH, and ammonia but almost any other test can be ordered. There are several manufacturers of the test kits and any should be OK for this activity. Students can bring water in from their homes, yards, ditches, streams, wells or ponds. If you wish the class to sample together, a field trip is always exciting for students. The water tests can be done in the field as well as classroom. If you want water that is a known quantity and will give positive tests, create your own by mixing appropriate pollutants in several batches of water.
Students should know about types and sources of water pollution. They should know which substances in water are most harmful and which are not.
1. Student collects and returns a water sample .10 pts
2. Student performs water tests and records results ..15 pts
3. Students correctly answers analysis questions .5 pts
4. Conclusion present and thoughtfully written ..5 pts
Lesson Design by Jordan School District Teachers and Staff.