We placed a large cup of warm water (with red food dye) in the middle of our table. Just inside this cup, we placed a smaller cup of cold water (with blue food dye) and observed the model.
Students noticed "steam" on the inside of the larger cup and droplets of water on the bottom of the blue cup. Mr. Kearney used this model to review the water cycle. He called the droplets condensation and the "steam" evaporation.
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