Science Projects for Kids: Air Pressure


Indoor Tornado Experiment
©2007 Publications International, Ltd.

Do tornadoes make you dizzy? Do their spinning, twirling winds make you wonder how they work? Well, shake up a mini-tornado of your own with this wild indoor tornado activity and study its spiraling vortex of currents without fear.

What You'll Need:

  • Clear mayonnaise jar
  • Water
  • Food coloring
  • Liquid dish soap
  • Vinegar

Step 1: Fill an ordinary glass mayonnaise jar about two-thirds of the way with water. Add a few drops of food coloring (any color) to the water.

Step 2: Add a teaspoon of liquid dish soap and a teaspoon of vinegar. Screw the lid on good and tight to prevent leaks and extreme messes.

Step 3: Give the jar a good, hard shake, then give it a twist to set the liquid inside spinning.

Step 4: What you'll see is a tiny bottled vortex that looks just like a miniature tornado. Watch the spinning mini-tornado closely and you may even gain insight into the real thing.

Keep reading science projects for kids: air pressure for a science experiment that uses air pressure to make a wall of water.

For more fun science projects, check out: