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What You Need:

  • Feathers
  • Droppers
  • Oil
  • Water
  • Waxed paper
  • Hand lenses

What Do You Do?

  • Use the dropper to add small drops of oil and water onto the waxed paper.  How do they look different?
  • Next, drop some oil and water in different places onto the feather.  How does the liquid react with the feather?

What Happened?

Aquatic bird feathers are neatly arranged to repel water, and they use an oil to coat the feathers (similar to wax paper) which makes the water roll right off of them.

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