If you think of celery as being a bundle of thin straws, then it’s easy to see how this experiment works. In this activity, you will get water to creep up through the plant tissue (the celery stalk) and find out how to make it go faster and slower.
The part of the celery we eat is the stalk of the plant. Plant stalks are designed to carry water to the leaves, where they are needed for the plant to survive. The water travels up the celery as it would travel up any plant.
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Be sure you are using fresh celery and that you trim off the edges. If the celery appears dry, it won’t work. Also be sure to dilute the gel coloring in water. If the gel is thick, it won’t travel up the stalk.
We conducted this activity with Gel Food Coloring (purple) and the food coloring did not travel up any of the celery stalks!
Perhaps – give it a try and let me know how it goes!
Yes, lettuce should work as well.
Can I use lettuce as an alternative for the celery?