FREE Video~ Learn how to make your own Seven Layer Density Column. Steve Spangler "stacks" liquids using a 9-oz. measuring cup, a tall, glass cylinder, and a turkey baster. Liquids include: light Karo syrup, water, vegetable oil, Dawn dish soap (blue), rubbing alcohol, lamp oil, honey, and food coloring. The preparation's a little cumbersome, but the "WOW" factor makes it all worthwhile! Limited budget? Watch the video together, and then let kids make their own concoctions at home!