1. Steady State Assumption

Try these first

1. 1.

   What does the steady state assumption imply?

   Hint

   Think about time vs. location.

2. 2.

   What is mass conservation?

   Hint

   How does this relate to pollutants in the air?

3. 3.

   What does the steady state assumption indicate about pollutant concentration?

   • It changes over time
   • It remains constant over time
   • It only varies by place

   Hint

   Think of a fixed-time scenario.

4. 4.

   True or False: The emission rate has to be variable for the steady state assumption to hold.

   • True
   • False

   Hint

   Consider what happens when emissions change.

5. 5.

   Consider a factory emits pollutants at a rate of Q. If the cooling temperature changes, altering emission rates, how would you approach the modeling of this pollutant?

   Hint

   What model can handle varying emissions?

6. 6.

   A plume expands in three dimensions due to environmental factors. How would you mathematically represent the maximum concentration in this dispersion model?

   Hint

   Think about how spread affects concentration visualizations.