Purpose: To observe how impurities are filtered out of water.
Materials:
water filtration bottles
pie tins
250 ml graduated cylinder
polluted water
Procedure:
Measure 250 ml of polluted water and pour into each bottle.
Observe the water that flows out of the bottles for cleanliness.
Record observations below using the key provided.
Observations:
make a chart with three columns and two rows
Key:
0 not clean
+ pollutants very apparent
++ pollutants somewhat apparent
+++ pollutants barely apparent
++++ no pollutants visible
| Bottle #1 | Bottle #2 | Bottle #3 |
Conclusion:
Answer the following questions based on your results.