Practice Discussion Of Boundary Conditions (4.2) - Other Mechanisms of Chemical Release From Sediments – Part 1

Practice: Discussion of Boundary Conditions

Lesson 4.2Other Mechanisms of Chemical Release From Sediments – Part 1

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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 a boundary condition in contaminant transport?
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Think about the limits of a system.
Question 2.
Define resuspension.
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What happens to sediments in turbulent water?
3Question 3.
What is a semi-infinite system in contaminant transport?
- A system with constant concentration far from the surface
- A system that has infinite depth
- A model assuming rapid fluctuation
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Think about how far we expect constant conditions.
4Question 4.
True or False: In most contaminant transport scenarios, convection is typically slower than diffusion.
- True
- False
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Consider the relative speeds of these processes.
Question 5.
A contaminated sediment layer has an initial concentration of 150 mg/kg. If diffusion coefficient is known to diminish this by 20% over a set time, how will you expect flux to change?
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Consider how diffusion directly corresponds to the concentration changes.
Question 6.
In an experiment, sediment water interface measurements were taken before and after a storm, showing dramatic changes in contaminant levels. Discuss potential resuspension effects observed.
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Think about how storm action affects sediment stability.

5 more questions in this section. Enroll free to practise them all.