Water Cleaning Experiment

US

 Using recycled water bottles, we made water filtration systems.  We cut the water bottle in half and turned the top upside down so the narrow end was entering the bottom half of the water bottle.  Then we layered a coffee filter, active carbon, sand, and gravel.  We poured our dirty puddle water we collected through our filter to see how clean/clear we could get our water.  Just like every experiment, some worked well and some did not.  We learned from our mistakes and were able to make a new filter that worked even better!