17. Evaporimeters and Analytical Methods of Evaporation Estimation

Try these first

1. 1.

   Define evaporation in your own words.

   Hint

   Think about the water cycle.

2. 2.

   What is an evaporimeter?

   Hint

   Consider its purpose.

3. 3.

   What is evaporation?

   • A process that cools water
   • A process of changing liquid to gas
   • A method to measure rainfall

   Hint

   Think about what happens to water on a hot day.

4. 4.

   True or False: Higher humidity decreases evaporation rates.

   • True
   • False

   Hint

   Consider why water evaporates quickly in dry air.

5. 5.

   Calculate the estimated evaporation rate from a synthetic lake with a measured wind speed of 2 m/s, using Dalton’s Law with saturation pressure of 12.3 kPa and actual pressure of 10.5 kPa.

   Hint

   Make sure to understand the variables involved in vapor pressures.

6. 6.

   Discuss the advantages and disadvantages of using remote sensing techniques compared to traditional pan evaporation methods.

   Hint

   Consider cost, technology needs, and the scale of measurement.