EVAPORATION
Crucial for the future
Calculations:
The experiment was started on the 11th of October 2012 and was ended on the 30th of October 2012. The short time period was a result of time restrictions and the due date of the project. There was a few interesting result that where compiled from this experiment. These are the results obtained from the experiment as well as the calculations involved in calculating the evaporation for the time period.
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Evaporation = - {[Previous days reading – (Rain fall x 2)] – Today’s reading} ÷ 2
All units are in mm.
Example:
Evaporation = - {[152 – (0 x 2)] – 160} ÷ 2
= 4 mm
Evaporation = - {[227 – (3 x 2)] – 230} ÷ 2
= 4.5 mm
​We found out that the wind plays a big role in evaporation because we picked up that on windy days we found that a lot more evaporation took place on those days and another interesting thing that we picked up during the experiment was that a lot of evaporation takes place during the night. More than what one will expect from the temperatures that was experienced at night. This was realised when we took readings at 12 hour intervals. No animals had access to the pan so it’s safe to say that evaporation took place.
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To check the results you can make use of the following equation:
Evaporation = 0.5 x {(Sum of Red)-(Sum of Yellow)} + Total rain fall
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Example:
Evaporation = 0.5 x {(250+202)-(152+140)} + 18
= 98 mm
Results of experiment:
Results from experiment:
