Friday, April 20, 2012

Lava Lamp Lab

As part of our matter science unit, we learned about density. To show how liquids have different densities, we created "lava lamps". Students did a great job and learned that oil is less dense than water.

First students carefully filled a water bottle with 1/4 water and 3/4 oil.


Then they added 5 drops of food coloring.




Finally, we added an "Alka-seltzer" and watched the reaction.   Groovy!
 

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