Monday, March 27, 2017

Evaporation in Less Than a DAY!

So this week, my youngest daughter has learned about the water cycle. We have used In The Hands of a Child's Water Cycle Unit.

In the unit, we have to do an evaporation experiment. We have actually done one of these before years ago when learning about clouds. You can see my post here when we did it in 2012. This time there was a BIG difference! I'm about to tell you why. It was more than just a learning experiment of evaporation, it actually ended up being a learning experiment about WHERE water is evaporating from for my youngest and oldest daughter, too.

In 2012, we lived in Tennessee. When we did our water evaporation experiment in Tennessee, it took days or maybe even weeks for all the water to disappear. It definitely took a couple of days or a few for the water to even move down the cup. Now in 2017, we live in Arizona...that's right - the DESERT! Anyone see where I am going with this? With this experiment, we filled the water to the line we marked on the cup and put it out this morning and before the sun had even set, the water was gone! My youngest daughter was amazed because she slightly remembers the last time we did this. Her hypothesis was at least a few days (because we put a smaller amount in the cup than last time).


This became a lesson on the humidity in Tennessee versus the dry desert in Arizona causing the time of the evaporation process to be different. Because of the humidity, the evaporation project took longer and because of the desert and it being so dry here, it evaporated so fast.

Yay! Don't ya love it when an experiment turns into more than you thought it would?




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