Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define effective diffusivity.
💡 Hint: Think about how the environment might affect diffusion.
Question 2
Easy
What role does porosity play in diffusion?
💡 Hint: Consider how a sponge might allow liquid to flow more easily.
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 effective diffusivity?
- The rate of diffusion in solids
- The rate of diffusion in fluids
- The rate of diffusion adjusted for interactions in porous media
💡 Hint: Think about how materials interact with the medium.
Question 2
True or False: Higher porosity leads to a slower rate of diffusion.
- True
- False
💡 Hint: Restrict your thoughts to space availability.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A sediment column has a porosity of 0.45, and the retardation factor is calculated at 2.5. Calculate the effective diffusivity if the original diffusivity of the substance is known as 1.0 cm²/s.
💡 Hint: Focus on how retardation affects the effective rate.
Question 2
Analyze how changes in bulk density could affect the effective diffusivity in a sediment analysis environment where porosity is altered.
💡 Hint: Consider what density means for the volume available.
Challenge and get performance evaluation