In honour of Science Week we have a super science experiment perfect for you to try at home! We think that science should be for everyday not just once a year!

Does your Bezlo Girl have a favourite experiment that we don’t know about yet?

Let us know in the comments below!


Maybe Princess Elsa can create snow & ice with her powers, but Bezlo Girls can also create some weather magic of their own. Say hello to a tornado in a bottle!

Creative Commons – Wikivisual

Creative Commons - Wikivisual

Check out HeyThatsHolly fun “Tornado in a Bottle”  YouTube video here .  We are big fans of this STEM loving Mom and daughter duo. 

Let’s get started…

What you’ll need for this project: 

  • 2 2-litre clear plastic bottles
  • Water
  • Food colouring
  • 1 teaspoon of glitter (optional)
  • Water
  • Packing tape or duct tape


  1. Fill one of the plastic bottles about ¾ full of water.
  2. Add a couple of drops of food colouring.
  3. Add about a teaspoon of glitter to the coloured water. The glitter represents the dust in the tornado.
  4. With the packing tape and help from a friend tape the top of the empty bottle to the top of the bottle with the water.
  5. Make sure the tape is secure around the bottle tops, as we don’t want any water leaking out.
  6. Turn the bottles around making sure the bottle with the water in it is on top.
  7. Watch as the water flows from the top bottle into the bottom bottle.

What happens:

The water flows slowly from the top bottle into the bottom bottle. Also air bubbles travel up through the water in the top bottle, making a noise. Hold the bottles where they are connected and quickly swirl them in a circular motion for a few seconds. Stop and look inside the bottles. There’s a mini tornado in the top bottle as the water flows quickly and quietly into the bottom bottle.

Why does it happen:

The circular motion of swirling the bottles causes the water to flow in a spiral down into the bottom bottle. Air from the bottom bottle can move more easily to the top bottle. We call our activity a tornado in a bottle because it looks like a tornado, except a tornado happens in air not in water.


Photo source : Jason Blum

Tornado Facts:

  • A tornado is a rapidly spinning tube of air that touches both the ground and a cloud above.

  • Tornadoes are sometimes called twisters.
  • Not all tornadoes are visible but their high wind speeds and rapid rotation often form a visible funnel of condensed water.
  • The Fujita Scale is a common way of measuring the strength of tornadoes. The scale ranges from F0 tornadoes that cause minimal damage through to F5 tornadoes which cause massive damage.
  • Most tornadoes have wind speeds less than 100 miles per hour (161 kilometres per hour).
  • Extreme tornadoes can reach wind speeds of over 300 miles per hour (483 kilometres per hour).
  • Most tornadoes travel a few miles before exhausting themselves.

For more information about the experiment you can visit: