6.3. Regulatory Agencies and Standards

Try these first

1. 1.

   What does PM stand for in environmental context?

   Hint

   Think about what components make up the air we breathe.

2. 2.

   In terms of size, what does PM2.5 refer to?

   Hint

   Consider how small that is compared to PM10.

3. 3.

   What does the acronym PM stand for in environmental science?

   • Particulate Matter
   • Pollution Matter
   • Primary Measurement

   Hint

   Think about what the air comprises.

4. 4.

   True or False: PM2.5 particles are larger than PM10 particles.

   • True
   • False

   Hint

   Remember how size classifications work.

5. 5.

   Explain a scenario in which evolving knowledge of PM sizes impacted public health regulations in a specific community.

   Hint

   Think about how research can lead to grassroots change.

6. 6.

   Given the aerodynamic diameter of various particles, illustrate why smaller particles pose more significant inhalation risks.

   Hint

   Consider the path air takes through the respiratory system.