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What causes dew to form drops on plants, water to bead on a waxed car, and bubbles to accumulate in soapy water? The answer is surface tension. Learn more about surface tension with a pan of water, some dishwashing liquid, and a paper fish.

Useful Vocabulary

Materials

To do this activity you will need:

Directions

  1. Gently place the paper fish on the surface of the water at one side of the roasting pan. The fish shouldn't move from that spot.
  2. Place a drop of dishwashing liquid in the hole in the middle of the fish. What does the dishwashing liquid do to the surface tension of the water? What effect does this have on the paper fish?

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