1 class periods of 60 minutes each
Students will model the water cycle in a test tube. They will also learn how water is purified.
- ring stands
- test tube clamp
- 2 large test tubes
- glass and vinyl tubing
- alcohol burner
- large beaker
- student sheet (attached)
Student Prior Knowledge
Students should have a basic understanding of the water cycle.
- Prepare a mixture of dirty water in a large bucket. Some possible things to add include, sand, clay, detergent, food particles etc.
- You may want to make an overhead of the lab set up to help them
- Supervise as they set up their labs.
- When you light their burners remind them to heat slowly, if their boil becomes to large the water will move through their plastic piping instead of evaporating and then condensing.
- Make sure that students wear their goggles throughout the lab
- Monitor students closely
Use a voltmeter to determine the cleanliness of water. Pure water will not conduct a current.
Students participated in lab and cleanup................15 points
Questions were correctly answered..............20 points
Conclusions represent ideas discussed in the Lab..............20 points
Lesson Design by Jordan School District Teachers and Staff.