Microbes, Microbes, Everywhere The Good, the Bad, and the Ugly
Algae Copepod Amoeba E. coli Not all Microbes are Bad
Yogurt lactobacilli Bread Yeast Human gut But what if the wrong microbes end up in our water? Ways to clean water Your mission: Find a low cost, effective way to clean drinking water Lets Try SODIS: Solar Disinfection Sun Power Ultraviolet - UV Infrared - IR What could be in dirty water? What could be in dirty water?
Algae Copepod Amoeba E. coli Removing some of the Ugly:
Sari filtration Toys: Algae (green), amoeba (blue), copepod (orange) akvopedia.org What about E. coli? SODIS Supplies Water from Stephens Creek
Glass bottles, plastic baggies SODIS table Aluminum foil Fabric for sari filtration Black tarp Box Tape/markers SODIS Variables Glass bottles vs. baggies
Reflective surface vs. black/white surface Placement of the bottles/baggies (standingup or laying flat) Sari filtered vs. non-filtered water ? Experiment Write your teams question Write your hypothesis
(ex. Does aluminum foil work better than the SODIS table?) Write your hypothesis Set up your three containers One control bottle or baggie (to be put in the controlbox (no sun) Two containers for your variables LABEL each container with your name and the variable you are testing