As you probably know 90% of the moisture in the atmosphere comes from evaporation of our oceans, lakes and rivers.  Did you know that 10% of the water in our atmosphere comes from transpiration? Plants take in water through their roots and send it up to the leaves and stems.  Some of that water is released in the form of water vapor through special structures in the leaves called stomata.This process is called transpiration.  

We do not normally see this happening, but there is a simple experiment you can try that allows you to see the water being released.  

On a warm day put a clean dry baggie over a branch with leaves on it.   Seal the baggie closely to the branch.   

The whole lesson with interactive notebook folds, a CLOSE reading activity, and response pages is available in my store Transpiration Lesson Aligned with NGSS

Visit my store to see more great science experiments Lynda’s Store