Science experiments for children – Tornado in a bottle. The tornado or whirlwinds are violent air vortices which originate at the base of a cumulonimbus cloud and come to touch the ground. Tornadoes are almost always associated with very violent storms, they can travel hundreds of kilometers and generate winds up to 500 km/h.
The tornado looks like a funnel that extends from the base of the cumulonimbus to the ground or the sea surface.
Tornadoes that occurs on the mainland (the most frequent), raises a large amount of dust and debris.
The diameter of the base of a tornado ranges from 100 to 500 meters, but in exceptional cases were recorded tornadoes with base diameter greater than 1 km. The height of a tornado can vary between 100 and 1000 meters, in relation to the distance between the ground and the base of the cumulonimbus.
Normally a phenomenon thunderstorms develops motions windy inside it more or less rectilinear; in some cases, however, it can give rise to vortices. These vortices, under certain circumstances, give rise to tornadoes.
At the center of the tornado will form a rotating column of air called vortex. Some tornadoes also have more of a vortex. This project allows you to see a vortex in a bottle, very similar to a tornado.
Science experiments for children – Tornado in a bottle
What do you need?
2 plastic bottles from 1.5 to 2 liters with cap,
water,
optionally dyes, shredded paper or glitter.
To link the two bottles are several possibilities:
1. you can purchase adapters specially created
2. You can place a washer on the neck of a bottle and secure with duct tape around the neck of the second bottle:
Or pierce both caps in this way:
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Science experiments for children – Tornado in a bottle
What to do?
Fill one of the two bottles with water to about 3/4.
Add optionally coloring, confetti of plastic, pieces of paper, glitter etc …
Screw the empty bottle on top of the bottle that contains the water.
Holding the two bottles to the connecting point and flip, so that the full bottle going to be above of the empty one. Exert a fast rotational movement and observe.
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Before pouring the water into the first bottle, you can put in it a little bit of colored lamp oil: oil is thicker than water, and when the tornado starts oil will emphasize better form.
You can also change the tornado by adjusting the diameter of the hole between the two bottles, for example by changing the washer.
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Science experiments for children – Tornado in a bottle
Other links
http://www.all-science-fair-projects.com/
