42.8 - Moisture Movement in Unsaturated Soil
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Practice Questions
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What does unsaturated soil mean?
💡 Hint: Think about what it means for soil to be partially filled.
What is Darcy's Law used to describe?
💡 Hint: It relates to how fluids move in soils.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What equation represents Darcy's Law for unsaturated flow?
💡 Hint: Look for the negative sign involved in the formula.
True or False: Hydraulic conductivity increases in compacted soils.
💡 Hint: Consider how compaction affects water flow.
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Challenge Problems
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Calculate the flux of water in a sandy soil with a hydraulic conductivity of 10 cm/hr and a matric potential gradient of 0.5. Use Darcy's Law.
💡 Hint: Remember to multiply the hydraulic conductivity by the gradient.
If a compacted clay soil has a hydraulic conductivity of 1 cm/hr, how does this affect irrigation scheduling compared to a loamy soil with 5 cm/hr?
💡 Hint: Think about how the differences in hydraulic conductivity will influence water availability for crops.
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