Liam's been wanting to do this experiment forever, and we finally had two 2-liter bottles!
We mixed water with blue food coloring and filled one bottle about 3/4 full.
Then we taped the other bottle to the top, turned it upside-down and spun it a little to get the water turning.
Liam thought it was awesome and the experiment was subsequently repeated...
until the bottles started to leak!
Such a little scientist!
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