cart Shopping Cart cart(0)

Create fog rings

You will need:

  • A bin, bucket or even a plastic cup
  • A piece of vinyl, plastic or table cloth larger than the bin
  • A ratchet strap, gaffer tape or similar
  • A knife (adults please!)
  • A fog machine and fog juice

    Vortex rings
    Fog rings are awesome :)



  1. Cut a hole out of the base of your bin no larger than half the diameter of the bin bottom.
  2. Stretch the table cloth or similar material across the larger opening of the bin. If you can get your hands on some vinyl this is the best material to use.
  3. Secure with a strap or strong tape to make the bin into a drum.
  4. Fill the cut opening with stage fog.
  5. Hit the drum and watch the fog rings fly!

    steve making a vortex ring
    Creating fog rings at a children's science party!
Ben making vortex fog rings
Ben making vortex fog rings a school Big Science show!
Be Amazing Book Front Cover; Ben Newsome, teacher & founder of Fizzics Education. Be Amazing -how to teach science the way primary kids love
Be Amazing!
How to teach science, the way primary kids love

Read more about Be Amazing

Want more ideas for teaching science?

Subscribe to the FizzicsEd Podcast!

Listen to FizzicsEd on Apple Podcasts

FizzicsEd podcast available on Stitcher

Why does it work?

Vortex fog rings volcom surf festival November 2011 at Manly Beach
Making vortex fog rings at the Volcom surf festival at Manly Beach

A fog machine is used to fill a drum made out of a bin. Hitting the drum forces air out of the hole, with the pressure differences within the air causing an air vortex. The pressure differences are caused due to air slowing down as it rubs on the side of the hole. Areas of 'slow air' tend to move towards areas of 'fast air'... better put; high pressure moves to low pressure. The mathematician Bernoulli found that moving air has less pressure than air that is still... this helps to create the fog ring as the slow air on the edge of the bin hole rushes toward the faster air in the center of the hole. The moving air has momentum and rolls the fog into a ring shape, also known as the vortex you see puffing out of the bin!
Join our newsletter for more science teaching thoughts & ideas

Join the Fizzics newsletter

Back to force & movement experiments

>100 Free Science Experiments on this site!

Coloured shadows
  • Experiments to colour your class!
  • Easy & fun
read more
skeleton and student
  • Make fake blood & more!
  • Biology made simple
read more
electricity experiments
  • Circuit science for kids
  • Cheap materials found easily
read more
Sugar and skittles dissolving in water experiment
  • Creative chemical concoctions!
  • Safe and engaging for kids
read more

School Science Visits: 

Call 1300 856 828 or use this form to discuss or make a show booking for your school!

Love Science?

Signup to our fortnightly email! Learn more

Contact us

1300 856 828

Unit 10/55 Fourth Ave
Blacktown, NSW 2148, Australia
facebook-icon Apple Podcast Icon  twitter-icon
linkedin-icon youtube-icon   pinterest-icon