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| Certain gases, such as the greenhouse gases (for example, carbon dioxide, water vapor, methane, and ozone), occur in the atmosphere in miniscule amounts. In this activity, students will use a dilution experiment to understand the concept of part-per-million (ppm) and part-per-billion (ppb) measurements. Through discussion, they will be able to relate these dilutions to concentrations of gases in our atmosphere. |
| Using this lesson in your classroom |
- Students will understand the concept of part-per-million (ppm) and part-per-billion (ppb) measurements.
- Students will appreciate the small scale of ppm and ppb measurements, as compared to the concentration scales that they may be familiar with.
- Students will relate the concepts of ppm and ppb to the concentration of gases in our atmosphere.
- From The National Center for Atmospheric Research and the UCAR Office of Programs http://www.ucar.edu/learn/1_4_2_14t.htm
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