Capillary action experiment demonstrates one of the coolest “superpowers” of liquids. In this one, we’ll make water go up the glass and into a bowl, without touching neither glass nor bowl. The experiment is pretty straightforward but can be pretty lengthy. So after you’ve started it, you’ll have time make a cup of tea or try another experiment from our list of playdate ideas!
What you need
A water glass (we used five!)
Cloth or paper towel
We also used food coloring for fun!
How to make it
Pour some water into three of the glasses
Put different food colorings in them
Prepare your wick by twisting a cloth or paper towel
Bend it in the middle
Place one end of the wick into the glass, and another into a glass nearby
Water will slowly ooze from a cup into a different via paper towel! You should see results in about a minute because the colors in empty glasses will start to mix! After the level of water in glass and bowl becomes equal, it will stop moving. For most of the water to move into a bowl, you’ll need to place a glass on something higher than a bowl.
Why it happens
As the name of this experiment suggests, it’s because of the physical phenomena knows as capillary action. There are millions of small spaces in the towel and water gradually advances through them along our twisted material. Capillary action is also what moves the moisture in plants from its roots up into the rest of the plant. It is pretty powerful, as some of the plants can be hundreds of feet high!
Feathers in exchange for prizes
While working on this playdate idea, our Keedoo Parrot has lost three feathers 😔 Please help us! Collect them by bringing this idea to life with your kids, and we will gratefully exchange them for valuable prizes.
Try making this experiment
Share your experience on Instagram or Facebook
Mention @getkeedoo in comments
Nominate two families to do the same
We will contact you to add three feathers to your Keedoo account that you can exchange for prizes in our mobile app