Walking Water

Watch colors magically 'walk' from one cup to another with this engaging science experiment! Children are fascinated by how capillary action works when they see the results.

STEMEducational
AgeAges 5โ€“10
Duration30 min
DifficultyEasy
CostLow
LocationIndoor

Educational Value

Teaches principles of capillary action and color mixing in a fun and visual way.

Materials Needed

Prep progress

Step-by-Step Instructions

  1. 1

    Arrange three clear cups in a row, with the first and last cup empty and the middle cup filled with water.

  2. 2

    Add a few drops of blue food coloring to the middle cup and stir it to mix the color.

  3. 3

    Fold paper towels lengthwise so that they are long strips.

  4. 4

    Place one end of a paper towel into the colored water and the other end into the empty cup on the left.

  5. 5

    Take another paper towel and repeat the process with the empty cup on the right.

  6. 6

    Observe the water as it travels up the paper towels and into the empty cups.

  7. 7

    After a few minutes, check how much colored water has moved to the other cups.

  8. 8

    Discuss with the children why the water traveled and what they observed.

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Frequently Asked Questions

What materials do I need for Walking Water?
You'll need: 3 clear cups, water, blue and yellow food coloring, paper towels. Most items are common household supplies.
What age is Walking Water best for?
This activity is designed for children ages 5 to 10. Difficulty level: easy. You can adapt the steps for younger or older kids.
How long does Walking Water take?
Plan for about 30 minutes. Most families complete it in one sitting.
Is Walking Water an indoor or outdoor activity?
This is an indoor activity. All you need is a clear table or floor space.
What will my child learn from Walking Water?
Teaches principles of capillary action and color mixing in a fun and visual way.

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