Blobs in a Bottle (The World's Easiest Lava Lamp) by sciencebob: Here is all you need: A clean 1 liter clear soda bottle cup of water Vegetable Oil Fizzing tablets (such as Alka Seltzer) Food coloring Kid's Science!
Really good for a PEOP lesson or a Science connection :) Alka Seltzer Blob Bottles! - Such a great craft to do with kids! Need: 1 Liter (or any size) bottle, regular water, cooking oil, food coloring, and Alka Seltzer.
Salt Volcano: Pour several inches of water into a jar. Add about of vegetable oil. Drop in food coloring and observe what happens. Shake salt on top of the oil/water/food coloring mixture. Pour or sprinkle more salt, as desired.
Make a Lava Lamp Science Experiment by Jamie Reimer Make a lava lamp with your preschooler, and your preschooler will love science experiments! I can’t promise that, but Henry has. Lava lamps are simple to make, too.