Thursday, December 6, 2012

Kitchen Lava Lamp

I found this idea online and it is PERFECT to demonstrate density!  The oil floats on the water because it is less dense.  If you add an alkaseltzer tablet it makes bubbles that are less dense than oil and rise to the top carrying drops of water with it.  Once they reach the top and the gas escapes the water sinks back down.  Very cool!  Click HERE to see the video

A water bottle with air, oil, and water
Add some food colouring to the water!

Alkaseltzer bubbles - LAVA LAMP!!

Very pretty!!

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