11-2 and 11-3 Vocabulary Questions Crossword
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
                                
 
 
Down: 1) Alum is rapidly mixed into the water and forms stick globs2) A virus, microorganism, or other substance that causes disease4) Pollution that comes from many sources rather than from a single specific site6) A structure that is built across a river to control a river’s flow8) Air is forced through the water to release unwanted gases, which reduces odor and improve taste9) The introduction into water of waste matter or chemicals that are harmful to organisms living in the water or to those that drink or are exposed to the water10) A method of providing plants with water from sources other than direct precipitation11) Chlorine is added to prevent bacteria from growing in the water13) The process of removing salt from ocean water Across: 3) Suitable for drinking5) Layers of sand, grave, and hard coal filter the remaining impurities7) In some communities, fluoride may be added to prevent tooth decay12) Bacteria and other impurities cling to the flocs, which settle to the bottom of a tank14) An artificial body of water that usually forms behind a dam15) A process that increases the amount of nutrients in a body of water through human activities, such as waste disposal and land drainage16) Pollution that comes from a specific site17) The source water supply is filtered to remove large organisms and trash
 

 

Create your own Crossword Puzzle for Free!		  Show Errors as I Type