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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define molecular diffusion.
💡 Hint: Think about how smell spreads in a room.
Question 2
Easy
What is bulk flow?
💡 Hint: Consider how a river carries debris downstream.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary mechanism of mass transfer in a deep lake with low flow?
- Advection
- Molecular Diffusion
- Thermal Convection
💡 Hint: Consider what happens when water isn’t flowing.
Question 2
True or False: Advection is always present in lakes.
- True
- False
💡 Hint: Think about conditions where water remains still.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A chemical spills on the surface of a stratified lake in winter. Predict the timeline for how the chemical will reach the bottom of the lake considering diffusion and thermal convection.
💡 Hint: Consider how long it takes for diffusion depending on the concentration gradient and water’s temperature.
Question 2
Evaluate the effectiveness of removing pollutants from a lake through a pumping system versus natural diffusion. Analyze potential impacts of bulk flow and stratification.
💡 Hint: Think about how mixing can enhance pollutant removal compared to simple diffusion.
Challenge and get performance evaluation