Question

How do you make a lava lamp

Answer 1

To make a homemade lava lamp, fill a clear plastic bottle with water, add vegetable oil, a few drops of food coloring for a lava effect, and drop in Alka-Seltzer pieces to create the bubbling lava effect. Add more Alka-Seltzer as needed to maintain the effect.

Answer 2

Fill the flask most of the way with your choice of oil.
Fill the rest of the flask with water. ...
Add a few drops of food coloring; your choice of color. ...
Break an Alka-seltzer tablet into a few small pieces, and drop them in the flask one at a time.
Watch your lava lamp erupt into activity