6.2. Fick’s Law and Its Application

Try these first

1. 1.

   What is Fick's Law?

   Hint

   Think about how substances move in a given space.

2. 2.

   Define mixing height.

   Hint

   Consider where pollution mixing occurs in the atmosphere.

3. 3.

   What does Fick's Law describe?

   • A. Air pressure
   • B. Diffusion
   • C. Temperature variation

   Hint

   Consider how substances spread out over time.

4. 4.

   True or False: A negative lapse rate indicates stable atmospheric conditions.

   • True
   • False

   Hint

   Think about temperature changes with height.

5. 5.

   Calculate the concentration of a gas emitted from a factory at ground level after moving 50 meters up in a stable atmosphere if the initial concentration was 100 ppm and the environmental lapse rate was -0.006 °C/m.

   Hint

   Consider how stability modifies concentrations as pollutants rise.

6. 6.

   A plume from a factory is observed to rise and spread at different angles. How would you analyze the shape and dispersion patterns based on atmospheric conditions?

   Hint

   Think about how different atmospheric conditions affect air parcel behavior and dispersion shapes.