Examples are:

1.  oil
2. air 
3.  water
4. pool

Materials

1.

2.

3.

4.

5.

6.

7.

8.

Process - ( use verbs or doing words in each step )

Step 1

Cut the bottle.....

Step 2

Put the top half upside down .......

STEP 3

Add layers of ....

STEP 4

Get 1 cup of dirty water .......

STEP 5

Pour dirty water into ......

Findings

Write a short sentence about the water every 1 minute. 

Include 'How much water has filtered through', 'How fast it is dripping through', and 'How clear the water is'.

Minutes                          1.                         2.                   3.                    4.                       5.
Drops per minute:
Water colour:
Conclusion:The water that flowed through the filter was like a hot chocolate colour.I didn't count how many drops there so i don't know how many there where.The bark,soil and leaves  sat on top of the little rocks.