Practice Moisture Movement In Unsaturated Soil (42.8) - Root Zone Soil Water

Practice: Moisture Movement in Unsaturated Soil

Lesson 42.8Root Zone Soil Water

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8 questions

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3 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
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does unsaturated soil mean?
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Think about what it means for soil to be partially filled.
Question 2.
What is Darcy's Law used to describe?
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It relates to how fluids move in soils.
3Question 3.
What equation represents Darcy's Law for unsaturated flow?
- q = K * (dh/dz)
- q = -K(θ) * (dh/dz)
- q = K + (dh/dz)
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Look for the negative sign involved in the formula.
4Question 4.
True or False: Hydraulic conductivity increases in compacted soils.
- True
- False
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Consider how compaction affects water flow.
Question 5.
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.
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Remember to multiply the hydraulic conductivity by the gradient.
Question 6.
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?
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Think about how the differences in hydraulic conductivity will influence water availability for crops.

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