Materials:
Plastic bottle (cut in half)
Sand, gravel, activated charcoal
Coffee filter or cloth
Dirty water (can be made with soil and water)
Clear glass or container
Goal / What They Will Learn:
Learn about physical filtration, sedimentation, and water purification processes.
Expected Outcome:
The dirty water will come out clearer after passing through the filter layers, demonstrating how natural materials can remove large particles and impurities.
