The focus of this lesson is for students to develop a ground level ozone sampling activity. Students will develop an investigation to measure the amounts of ground level ozone present in their area. Once data has been collected, the students will access the AIRNow web site and obtain near real-time data for the area (if available). The students will make comparisons between the student collected versus AirNow data. Students will also be responsible to identify possible sources of NOx and VOCs, leading to the production of ground level ozone.
Depending on available resources, students may use different sampling materials, or use similar materials but pursue differing methodologies. Overall, each student investigation will follow the same basic approach outlined below.
For example, if students are concerned about the level of ozone near their school, the sampling objective might be:
- If ozone is present and measured on the EPA AirNow web site, the EcoBadge OR ACCESS system OR Ozone Detector Badge OR chemical testing paper OR rubber bands OR milkweed will detect the presence of ozone.
- If ozone is present outside, we predict ozone measurements will be higher outside than inside of the school, when the windows are closed and measurements are not taken near copy machines or other potential indoor sources of ozone.
- If ozone is present outside, we predict ozone measurements will be roughly equal inside and outside of the school, when the windows are closed and measurements are not taken near copy machines or other potential indoor sources of ozone.