Wednesday, December 2, 2009

Liquid Densities

We have been exploring the densities of various liquids in class. The students made a Density Column using alcohol, fresh water, vegetable oil, and glycerin.

These 4 items layer out quite nicely with glycerin on the bottom and alcohol on the top.

We then investigated which is denser, warm water or fresh water.

With a little practice, the kids were able to see that warm water is less dense than cold water?

We next explored the questions, which is denser, salt water or fresh water? The kids were able to determine that the salt water was denser than the fresh water.

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