36.1.2.1 - Grain size and distribution
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Practice Questions
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Define permeability.
💡 Hint: Think about how water moves through different materials.
What typically increases permeability: a higher or lower void ratio?
💡 Hint: Consider the space between the grains.
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Interactive Quizzes
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What does permeability measure?
💡 Hint: Think about how water moves through different soils.
True or False: Larger grains generally yield lower permeability.
💡 Hint: Consider how a bag of marbles compares to a bag of sand.
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Challenge Problems
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Consider a material composed of mixed grain sizes. Discuss how the permeability might be affected during heavy rainfall events.
💡 Hint: Consider various rainfall scenarios and their impact on soil layers.
Design an experiment to test the permeability of a soil sample. What factors will you control?
💡 Hint: Think about materials and methods used in a lab to simulate water flow.
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