Monday, February 14, 2011

Water






We've been studying the properties of water. The students learned the parts of a water molecule, and made a very scientific model of it...in the form of a hat! We've explored freezing and melting and have learned about water's sticky properties. Cohesion is when water droplets stick to each other. Adhesion is when water droplets stick to other things. We've also learned about the density of water compared to other liquids. One big idea is that cold water is more dense than hot water, and that salt water is more dense than fresh. Water is exciting to explore!

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