Yuck @ the Library: Homemade Lava Lamps

Summer 028One of the programs I run at our branch is “Yuck @ the Library”: an interactive, science-based event designed to get kids interested in STEM subjects. This program is especially valuable because it introduces kids to scientific concepts in a fun, non-threatening way. It teaches them that science can be FUN and it supports their learning in school.

This month, I decided to teach our kids about density by having them make their own homemade lava lamps. Directions on how to do this experiment can be found Science Kids.

Supplies:

– a clear, plastic bottle

– water

– vegetable oil

– food coloring

– Alka-Seltzer tablets

Tip: when adding the food coloring, have the kids gently swish their bottles around. This will help distribute the color so the reaction is easier to see.

The kids really enjoyed watching the chemical reaction between the Alka-Seltzer and the water. Not to mention it was relatively inexpensive – a win/win program!