1. Air Pollution Experiment # 3

2. I. Problem What are the causes of air pollution in my place? II. Hypothesis ( If ___________, then ______.) III. Materials Clean white cloth, oil, clips/clothes pins

3. IV. Procedure 1. Get the clean white cloth. 2. Rub some oil on it. 3. Find a place where you can hang the cloth with oil. (It can be a window in your house, in the garden or any place where you spend time).

4. 4. Wait for 3 days. 5. After 3 days, get the cloth. 6. Compare it with those of your classmates or those that were hung in other places. 7. Record your observation.

5. V. Data A.Chart Set-upsObservations A. Before B. After

6. B. Questions 1. Describe the cloth before the activity. 2. Describe the cloth after 3 days. 3. In your group, whose cloth accumulated the most dirt? 4. What are the pollutants found in your cloth? 5. How good is the air in my place?

7. Interpretation_______________________________ VI. Conclusion _______________________________ _______________________________