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Homemade Tornado
by Kathryn Martinez (Kathryn's bio)
[Note: If you'd like to read more from Kathryn, be sure to check out her web site.]
This is a fun science experiment. There are several variations of this available on the internet and at toy and science stores at your local mall. I like this version because it is inexpensive and the kids get to make it from scratch.
Supplies:
Two 2-liter plastic soda bottles*
Water
Food coloring of your choice
Glitter (optional)
3 x 5-inch index card or piece of thin cardboard
Masking tape
Duct or electrical tape
Scissors
Directions:
1. Wash out the soda bottles and remove their labels.
2. Fill one bottle with water and add a teaspoon of the food coloring and a few pinches of glitter.
3. The food coloring color doesn’t really matter, it and the glitter are used to make the cyclone more visible.
4. Roll the index card width-wise so that it will fit in the mouths of the soda bottles.
5. Use masking tape to hold the end of the card in place.
6. Put the rolled-up card in the mouth of the bottle that contains the water.
7. Take the other soda bottle and place its mouth over the rolled-up card, pushing the bottle down so the mouths of both bottles are flush.
8. Tape the mouths of the bottles together with duct or electric tape, making sure that the seal between the two is as waterproof as possible.
9. Grab the bottles by their bases and turn the “cyclone” upside down.
10. As the water begins to pour from one bottle to the other, gently swing the bottles in a counterclockwise motion until the tornado forms.
*Note: You can use small plastic soda bottles, but they don’t give quite the effect desired. I don’t recommend using the 3-liter bottles because they become quite heavy when the water is put in them.
Copyright 2001 Kathryn Martinez. All rights reserved. Used with permission.
| About Kathryn Martinez: I'm a SAHM, home schooling mother of 4 children, 1 husband, and a neurotic cat. This is our sixth year of home schooling. I worked for over 10 years at USF in an education and training department. I hope that by sharing my experience with other home schoolers, both the new and the not-so-new and those just considering home schooling, I will pass along all the help that was given to me when I first started out. |