How to Make a Rainbow Water Bridge

Watch water walk from glass to glass - How to Make a Rainbow Water Bridge!



Hey Everyone and welcome back to the lab.



In this video we attempt to build a water bridge using paper towels!! This is a great experiment to teach children the color wheel and capillary action. You can watch as primary colors mix to form secondary colors, or take the experiment a little farther to create tertiary colors. We used primary colors in this experiment and watched as the glasses mix to create secondary colors.



The water is drawn up through the paper towel by capillary action (which is also called capillary motion or "wicking"). This is the demonstrated by the movement of the water through paper towel against the force of gravity. The water continues to move through the paper towel until all of the glasses reach the same water level.



Give it a try and use different colors to see what type of rainbow you can make.



Make sure to comment below if you tried this experiment. And as always, have FUN!!!



★☆★ RAINBOW WATER BRIDGE ★☆★



5 Cups or Glasses

3 Cups of Water

Food Coloring or Dye

Paper Towel (4 pieces)