======Color Changing Walking Water======


<WRAP right box>
**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Categories:** {{$demo.categories}}
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**Alternative titles:** Rainbow Walking Water
</WRAP>

====Summary====                   
{{$demo.summary}}



====Procedure====  
  - Place 7 cups in a row. Fill the 1st, 3rd, 5th, and 7th cups about three-quarters full with water. Leave the other cups empty.  
  - Add 5 drops of red food coloring to the 1st and 7th cups.  
  - Add 5 drops of yellow food coloring to the 3rd cup.  
  - Add 5 drops of blue food coloring to the 5th cup.  
  - Cut paper towels into half-sheets, fold them lengthwise twice, and trim to a manageable length.  
  - Place one end of a folded paper towel into one cup and the other end into the next cup. Continue until all cups are connected in a chain.  
  - Watch as the colored water climbs up the paper towels and “walks” into the empty cups. Over time, the colors in the empty cups mix to form new colors.  




====Links==== 
Travelling Waters Experiment ~ Color Mixing - Incredible Science: 
{{youtube>9EUfVIon6t8?}}\\

Color Changing Walking Water Science Experiment - Cool Science Experiments Headquarters: 
{{youtube>aTYOnV8hZHA?}}\\

📄 Rainbow Walking Water Science Experiment for Kids - Fun Learning for Kids: [[https://funlearningforkids.com/rainbow-walking-water-science-experiment-kids/]]\\


====Variations====
  * Rearrange the colors to see different mixing results.  
  * Try using more or fewer cups.  
  * Create a color wheel by arranging the colors in a circle.  
  * Use different brands or thicknesses of paper towels to compare how quickly the water moves.  




====Safety Precautions====
  * Be careful when pouring water to avoid spills.  
  * Food coloring may stain surfaces—cover the table with newspaper or paper towels.




====Questions to Consider====
  * How does the color travel up the paper towels?