Speedy fish experiment

Speedy fish experiment

Watch the fish swim crazily across the water as your kids learn about surface tension with this fish-friendly kids’ science experiment. Have fun with your kids as they explore the wonders of science today.

What you need:

  • Water
  • A bowl
  • Liquid soap
  • Cardboard
  • Scissors

Number of players:


Cut out little fish shapes from the cardboard.

Fill the bowl with water.

Carefully float the cardboard fish on the top of the water.

Add a drop of liquid dish soap behind the fish’s tail.

What happens? The fish swims away!



  • This happens because the dish soap breaks the water’s surface tension, allowing the water to pull the fish away from the soap. How cool is that?

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