Drinking Bird Races - this was an experiment we did as part of our PhysicsQuest. Wonderfully fun experiment - these 'dippy birds' have a whole lot of science going on. Often they are confused with perpetual motion but it is not - temperature, pressure, condensation, balance and evaporation all play crucial roles in driving this bird to constantly drink. My son thought this was great fun and after the experiment was completed in co-op, he brought his birds home and set them up on his desk.
Do you see who else finds the birds fascinating???
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