All STEM Activities

Walking Water

Active Time
< 10 minutes
Total Project Time
Up to 1 day
Key Concepts
Gravity, surface tension, capillary effect

Introduction

Imagine this challenge: You have two glasses of water—one empty and one full. You want to pour half of the full glass into the empty one. The twist? You aren't allowed to pick up either glass! Can you get the water to "walk" between the glasses using nothing but a paper towel? Try this activity to find out!

Credits

Ben Finio, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

Materials

  • Odd number of clear glasses or cups (at least three)
  • Water
  • Food coloring
  • Spoon
  • Half-sheet paper towels (at least three)

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Active Time
< 10 minutes
Total Project Time
Up to 1 day
Key Concepts
Gravity, surface tension, capillary effect