Practice Empirical Methods (20.4) - Measurement of Evapotranspiration - Hydrology & Water Resources Engineering - Vol 2

Practice: Empirical Methods

Lesson 20.4Measurement of Evapotranspiration

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9 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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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the Blaney-Criddle equation used for?
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Look for the equation involving k, p, and T.
Question 2.
Define the Thornthwaite method.
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Focus on temperature and its importance in this context.
3Question 3.
What is the main purpose of empirical methods in estimating ET?
- To provide direct measurements
- To use observed data for estimations
- To replace all measurement methods
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Think about why we use formulas instead of measuring directly.
4Question 4.
True or False: The Hargreaves method is less accurate than the Thornthwaite method.
- True
- False
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Recall the characteristics of both methods.
Question 5.
A regional agricultural extension office is analyzing ET for potential irrigation planning. They have data showing the monthly average temperature as 30°C, the percentage of daylight in July as 60%, and a crop coefficient of 1.2. Use the Blaney-Criddle method to calculate ET.
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Start with the equation definition and plug in the values carefully.
Question 6.
A soil and climate research team is comparing the Thornthwaite and Hargreaves methods. They observe monthly temperatures averaging 20°C in winter. Discuss which of the two methods might give them a better estimate and why.
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Think about the factors each method considers.

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