Practice Assumptions In Dispersion Models (1.1.6) - Evaporation from Different Surfaces

Practice: Assumptions in Dispersion Models

Lesson 1.1.6Evaporation from Different Surfaces

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6 sample questions

Question 1.
What does the mass transfer coefficient measure?
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Think about how substances move from one phase to another.
Question 2.
Define 'Evaporation'.
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Consider what happens when water sits out in the sun.
3Question 3.
What role do mass transfer coefficients play in environmental modeling?
- They estimate the area under curves
- They indicate rates of mass transfer between phases
- They measure temperature changes
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Think about what factors influence how substances mix.
4Question 4.
True or False: Steady-State conditions imply that concentrations do not change over time.
- True
- False
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Recall the definition we discussed in class.
Question 5.
A chemical spill occurs on a lake. Given the mass transfer coefficients, predict the concentration drop over the first hour. Consider water temperature changes during this time.
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Pay attention to how temperature affects diffusion rates.
Question 6.
During a forest fire, pollutants are released into the air. How would you set up a model to calculate concentrations downwind over time? What variables would you consider?
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Use the knowledge of dispersion models to frame your approach.

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