Eyewitness to Spring Forecasts

December 15, 2010 10:28:25 AM PST
WABC-TV presents: "Eyewitness to Spring Forecasts," featuring the ABC7 Accu-Weather team. They answer your weather-related questions and share some weather experiments for kids that are both fun and a way to help them understand the phenomenon of weather. The special half hour aired Saturday, and you can watch it right here in the media player at the top of this page.

Experiments Seen on the Show:


Lee's Experiment: Make Your Own Tornado

What You'll Need:
Mayonnaise jar or a canning jar
Clear liquid soap

Fill the jar about three-quarters full of water. Put a teaspoon of the liquid soap into the jar. Also, add a teaspoon of vinegar into the jar. Tighten the lid and shake the jar to mix up the ingredients. Now, swirl the jar in a circular motion. The liquid will form a small tornado.

*If you want to get creative, you can also use food coloring to make the tornado have a color and glitter to represent debris

Why Does This Happen?
The swirling motion you give the bottle forms a vortex and is a easy way to create your own tornado.


Bill's Experiment: How to Bend Water

What You'll Need:
A comb
A piece of wool, nylon or fur
A water faucet

Rub a comb quickly against the fabric for at least a minute, then hold the comb near a thin stream of water from the faucet. You should see the water bend toward the charged comb.

Why Does This Happen?
You're creating little, negative charges on the comb when you rub it against the fabric. Those charges are attracted to the positive charges in the water.

------------------------------------------------------------ Jeff's Experiment: Make Your Own Fog

What You'll Need:
A glass jar
A strainer
Some water
Several ice cubes

Fill the jar completely with hot water and let it sit for about a minute. Then, pour out nearly all the water, leaving about an inch of water at the bottom of the jar. Place the strainer over the top, and put a three or four ice cubes in the strainer. See what happens!

Why Does This Happen?
The cold air from the ice cubes hits the warm, moist air in the bottle. The water in the bottle condenses, forming fog.

For more experiments you can go to: www.weatherwizkids.com