We love Science! We learnt about our respiratory system in November and we realised how much the air we breathe is polluted by conducting a simple Science experiment. We tested different areas to assess levels of air pollution in our school and community.
Question: Is the air we breathe polluted?
- Index cards
- Petroleum jelly
- Sellotape and masking tape
- Cotton wool
- Hole punch
We were divided into cooperative learning groups of four students and we labelled each index card with the location where it was going to be placed: playground, window, door, gate, gym, teacher´s car…
Then we smeared petroleum jelly on the middle area of an index card. The air pollution particles (those that are visible) would stick to the petroleum jelly.
Hypothesis: Will the cards have air pollutants stuck to the petroleum jelly? If so, which area will have the most air pollution stuck to the petroleum jelly?
We taped the index cards to the areas being tested for air pollution, we observed then for several days and we collected data about those and registered the information. Then, we determined which of the cards has the most air pollution particles on it. We reflected on our hypotheses and determined if it was correct.
We discussed the results of the experiment and drew conclusions.
Scientific evidence and Conclusion:
Further reflections: Why did some of the cards collect more pollution than others? Can we do anything to change the amount of air pollution particles in those areas (e.g., close the window to the classroom or their home, ride their bikes on streets with less traffic)?