Rene Descartes (1596-1650) was a French scientist and mathematician who used this same experiment show people about buoyancy. By squeezing the bottle, the test tube (diver) sinks and when released, the test tube surfaces. You can add hooks, rocks, and more to your set up to make this into a buoyancy game!
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That is so cool I made it myself and it is fun to try.
Sounds like a good science experiment! Try it and tell me what happens!
is warm, cold, or mild water better