Practice Sediment-water System (2.2) - Contamination of Sediments - Environmental Quality Monitoring & Analysis, - Vol 5

Practice: Sediment-Water System

Lesson 2.2Contamination of Sediments

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9 questions

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

Question 1.
What is a D-NAPL?
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Consider its density relative to water.
Question 2.
What happens to L-NAPLs when spilled?
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Reflect on their property of being less dense than water.
3Question 3.
What is the main difference between D-NAPL and L-NAPL?
- D-NAPL is denser than water
- L-NAPL is denser than water
- Both float
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Remember which type sinks and which type floats.
4Question 4.
True or False: Historical contamination can impact current environmental health.
- True
- False
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Consider the lasting effects of past actions on the environment.
Question 5.
Calculate the expected concentration of a D-NAPL at the sediment-water interface if its initial concentration in sediment is 100 mg/kg, given a constant mass transfer coefficient.
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Remember to consider both dissolution and the nature of concentration gradients.
Question 6.
Evaluate the impact of historical contamination on current freshwater ecosystems by analyzing a case study.
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Think about how pollutants can be transferred through the food chain.

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