Science Crossword
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
 
 
Down: 1) An example of the smallest of contaminants. 2) The floc settles to the bottom and the clear water moves to filtration.5) Chemicals added to the water. 8) tiny sticky particles Across: 2)  Used to block large debris from entering3) Water is placed in a closed tand or reservoir in order for disinfection to take place. The water then flows through pipes to home and businesses in the community.4) A small amount of chlorine is added or some other disinfection medthod is used to kill any bacteria or micoorganism that may be in the water.6) Dirt, tiny pieces of leaves and other organic matter.7) Removes dirt and other particles in water. Alum and other chemicals are added to water to form tiny sticky particles called "floc" that attract dirt particles. The combined weight of the dirt and floc cause it to sink. 8) The water passess through filters, some made of sand, gravel, and charcoal that help remove even the smallest particles.
 

 

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