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Kruger's Question
Materials:

  • A basin of water
  • Two cups
  • Procedure: Place one cup right side up in the water and one upside down. Which one sinks further into the water?

    Explanation: The upside down cup will sink deeper into the water because the air inside the cup compresses slightly. Therefore the water level inside the inverted cup will be at the same depth as the level of the bottom of the other cup.

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