Your kids are going to be blown away by this fun, colorful science experiment that helps kids understand capillary action. This easy science project is sometimes called walking water.
Kids are naturally curious about the world around them. They ask lots of questions and perform their own experiments. Just look at a toddler who decides to blow into his milk to see what will happen. It sometimes takes them a lot of trial and error, but eventually they realize it will bubble up over the top of the glass and make a mess. Preschoolers stomp in water or mud puddles to see what will happen and then continue to jump more as they realize it makes things spray up and make a mess. Kindergartner find a worm, ladybug, spider, or other insect and follow it around the yard, pick it up and observe it.
Children are little scientists. It is us adults that teach them to stop exploring and trying new things when we harshly yell stop blowing bubbles in your milk instead of saying, it made a mess when you blew bubbles in your milk didn’t it. Let’s try a different activity. They need to know guidelines, methods to explore around them so they can investigate without causing mayhem or large messes.
This capillary action experiment will amaze kids from toddler, preschool, pre k, and kindergarten to first grade, 2nd grade, and 3rd grade kids. They will very quickly be able to watch as water moves or travels and by doing so it will create a beautiful rainbow, introduce color mixing, and delight young learners as they try to understand what just happened!
Capillary Action Experiment
- 5-10 drops of red food coloring to glass 1 and 7
- 15 drops of yellow food coloring to glass 3
- 5-10 drops food coloring to glass 5
Capillary Action Science Experiment
Walking Water Experiment
Capillary Action for Kids
Capillary action is the process in which a liquid moves up something solid, like a tube or into a material with a lot of small holes. This happens when 3 forces called cohesion, adhesion, and surface tension work together. Water molecules are considered cohesive (sticky to each other) and they adhere (stick) to the paper towel. As one water molecule moves up the paper towel it pulls the other molecules with it. The molecules pull each other along like a drawstring.
Colorful Science Experiments
- Jelly Bean STEM Experiment
- Spring Flower Chromatography Experiment
- Kool Aid Edible Crystals Experiment
- Make Plastic from Milk
- Exploding Watermelon Science
- Look INSIDE a Volcano or make a Snow Volcano
- Colorful Oil and Water Density Experiment
- Pop Rock Science Experiment for Kids
- Playdough Layers of the Earth
- 2 Ingredient WOW Slime
- Minion Squishy Circuits
- Why do Leaves Change Colors
- Charged Atoms Science Experiment
- DIY Lava Lamp
- Air Pressure Science Projects
- Amazing Coloring Flowers Experiment
- See all of our color activities for kids
We have lots of other kids activities filled with ideas for every holiday and season of the year!
Did you know we have over 1 million pages of free printable worksheets for kids – including pre k worksheets, free printable worksheets for kindergarten, grade 1 worksheets, 2nd grade worksheets and free alphabet printables to help make learning FUN. Plus find our history lessons and amazing easy science experiments for kids
Planning your summer vacation? Don’t miss our tried and true disney world tips!