Practice Environmental Quality: Monitoring And Analysis (1) - Transport of Pollutants - Gaussian Dispersion Model

Practice: Environmental Quality: Monitoring and Analysis

Lesson 1Transport of Pollutants - Gaussian Dispersion Model

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9 questions

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3 cards from this section. Quick, good the night before a test.
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6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the mass balance equation?
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Think about what happens in a closed system.
Question 2.
Name the two types of dispersion models.
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One is stationary and the other moves with the flow.
3Question 3.
What type of model follows fluid movement?
- Eulerian Model
- Lagrangian Model
- Static Model
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Consider which model moves with the pollution.
4Question 4.
True or False: In steady state conditions, pollutant concentrations change over time.
- True
- False
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Think about the definition of steady state.
Question 5.
Given the emission rate of a toxic gas is 5 kg/hr and the wind speed is constant at 3 m/s, calculate the concentration at a certain distance downwind, considering a simple Gaussian dispersion model.
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Refer to the Gaussian dispersion equation - you will also need to consider dispersion coefficients.
Question 6.
Analyze a scenario where pollutant concentration at a monitoring station deviates from predictions based on the mass balance model. Provide potential reasons for this discrepancy.
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Think about how variable external factors can disrupt stable conditions.

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