Reference ET (ET) is measured in which unit?

Study for the Water Use Efficiency Practitioner One Test. Use flashcards and multiple choice questions, with hints and explanations. Prepare efficiently for your certification exam!

Multiple Choice

Reference ET (ET) is measured in which unit?

Explanation:
Evapotranspiration is quantified as a depth of water that would be lost from the surface, not as a speed or area. Because it represents a water depth, the unit is a unit of length. In many irrigation and water-use contexts, especially in the United States, this depth is expressed as inches of water (often per day). That’s why inches is the best answer here. If you’re more used to metric units, you’d see millimeters per day, since 1 inch equals 25.4 millimeters.

Evapotranspiration is quantified as a depth of water that would be lost from the surface, not as a speed or area. Because it represents a water depth, the unit is a unit of length. In many irrigation and water-use contexts, especially in the United States, this depth is expressed as inches of water (often per day). That’s why inches is the best answer here. If you’re more used to metric units, you’d see millimeters per day, since 1 inch equals 25.4 millimeters.

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