Water Cycle - Oceans (2)
Lab 

PROBLEM: What is the difference between dirty, clean, and polluted water?

PREDICTION:

EXERCISE I 

Listen to the instructions from your teacher.
Which jars of water is dirty?
Which jars of water is polluted? 
Why?

EXERCISE II 

Look under the microscope at the samples of water. Record if you think they are polluted or dirty.

SAMPLE #

COMMENTS

1

 

2

 

3

  

4

 

5

 

CONCLUSION: The difference between dirty water, clean water, and polluted water is:
  

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