ALCA Members PLC Domains Data Standards Map Plan Curriculum Assessment Strategies

How Do We Recycle Waste Water?

Answer each of the following questions by checking "yes," "no," or writing the answer in the "answer" column. You have successfully completed this activity when all questions are answered. Give the completed rubric to your teacher.
Earth's Water Yes No Use this answer column to write your descriptions.
Did you view the Earth's Water image file?      
How much of the Earth's water is not usable?      
Why is it not usable?      
How much of the Earth's water is usable?      
How much of the Earth's water is usable and available?      
Did you open the Earth's Water Grid image file?      
Did you print the grid or copy and color the grid in a paint program?      
Did you show your completed grid to your teacher?      
Aeration Yes No Use this answer column to write your descriptions.
Did you pour 1.5 L of swamp water into a 2 L bottle?      
Describe the appearance of the water.      
Describe the smell of the water.      
Did you shake the water and then pour it from bottle to bottle ten times?      
Describe any changes you observed.      
Coagulation Yes No Use this answer column to write your descriptions.
Did you add 20 g of alum crystals to the "swamp water?"      
Did you stir the mixture for 5 minutes?      
Describe any changes you observed.      
Sedimentation Yes No Use this answer column to write your descriptions.
Did you observe the water at 5 minute intervals?      
Describe the changes at 5 minutes.      
Describe the changes at 10 minutes.      
Describe the changes at 15 minutes.      
Describe the changes at 20 minutes.      
Filtration Yes No Use this answer column to write your descriptions.
Did you make and attach the filter to the bottle neck?      
Did you add a layer of pebbles?      
Did you add a layer of coarse sand?      
Did you add a layer of fine sand?      
Did you clean the filter with 5 L of clean water?      
Did you pour two thirds of the "swamp water" through the filter?      
Did you compare the filtered "swamp water" with the remaining unfiltered "swamp water?"      
Describe how the treatment changed the "swamp water's" appearance?      
Describe how the treatment changed the "swamp water's" smell.      

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