Walking water? We’ve heard about running water but not walking water. We think that’s different. Yes, they are different because as we all know that running water is the water from the pipes and it’s fast like it’s flying. In here, you will see that walking water will take minutes to move from one area to another as if it’s walking. And the magic of science doesn’t end there. With the use of food coloring, the water also changes colors as it moves from glass to glass. Interesting, huh? Why don’t we just start?
1. Gather the materials needed. This includes seven clear glasses, paper napkin, food coloring and of course, water.
2. Get six big paper napkins.
3. Fold it in quarters lengthwise and set these aside.
4. Place seven clear glasses side by side. It’s important for it to be clear so you can see the water walks.
5. Pour two-third glass of water into the glasses placed on both ends of the line.
6. Then fill the third and fifth glasses with water. It should have greater water than the glasses at both ends.
7. Drop red food coloring to the first and seventh glasses, yellow food coloring to the third glass and blue food coloring to the fifth glass.
8. Insert the folded napkins into the glasses wherein one edge is to the glass with water and the other is to the glass without water.
9. Watch as the water walks from one glass to another.
How does it work?
Kidspot explains that the process of water moving along a conduit (the paper towel in this case) is called: capillary action. This is how flowers and plants move water from the ground beneath them, up through their stems and into their petals and leaves. The paper towel is very ‘absorbent’: which means there are enough gaps in its fibre for the water to move through easily and quickly. The adhesive force between the water and the paper towel is stronger than the cohesive forces inside the water itself.