Cartesian Diver

Assessment for density and or pressure, observation, and use of evidence

Procedure

 

 

Create a Cartesian Diver with a capped two-liter pop bottle. Filled with water and a glass eye-dropper in it.

When the bottle is squeezed the dropper moves to the bottom and when the pressure is released the dropper moves to the top.

Ask - How did the stopper go up and down?

Ask - What caused the stopper to go up and down?

Summary of a Cartesian Diver Results

The following is a list of results summarized from the least scientific to the most scientific.

 

Dr. Robert Sweetland's notes
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