Introduction: Tornado in a Bottle

Do you remember your 6th or 7th grade Science Class? yeah, me neither, but after some research in my "Old School Papers" I found out that we studied natural disasters, and one of them was tornadoes. First, a little information on a tornado:

"A tornado is a natural storm disaster created when a front of hot, humid air and a front of cool, dry air collide in the atmosphere. The warm air is pushed upward, which causes winds carrying water droplets to rotate into a vortex, speeding at up to 300 mph in the center. This spinning column of air and water droplets then begins to stretch between the earth and a convection cloud (made up of water droplets) to create a tornado. The water droplets form from the condensation of water vapor in the area within the funnel where there is low temperature and pressure. This makes the funnel visible to our eyes, because the large number of water droplets block out the sun's light, just like a thunder cloud." (www.haverford.edu)

This little experiment shows the physical properties of a tornado on a small scale.

Step 1: Supplies

To make a Bottled Tornado, you will need the following:

- two empty 2 or 3 litre bottles (cleaned)
- water

optional:

- a tornado tube
- ducktape
- washer
- lamp oil

Step 2: Assembly

Take your clean empty bottles, and fill one 2/3 full of water. Place the other bottle (empty) on to the coupler, or use duct-tape to connect the bottles together. Your done! Its a rather brain-dead process which anyone can do, but there is some technique to it as well.

To Make the Tornado:

- Quickly invert the lower bottle (full) to the top, and with a smooth circular motion, rotate the top bottle (full) to make the tornado.

Step 3: Optional Science Part

Okay, hopefully you plan on reading this the whole way through. This is where the optional-ness comes into play. Before pouring your water into the one bottle, pour some coloured lamp oil into it, and then add the water. The oil is more dense than the water, so they separate from each other instead of combining. Thus, when the tornado commences the oil will make up most of the tornado, b/c it is more dense than the water, and will be pulled down first.

You can also change how big the hole is in between the two bottles by swapping out washers. Experiment between large holes, small holes, even squares.

Step 4: Quick Video

Heres the video:


Comments

author
AbigailR17 made it! (author)2017-05-23

I get the this video is privet

author
3103960 made it! (author)2015-04-27

Where do i buy "tornado tubes"?

author
megb2786 made it! (author)megb27862017-04-13

at the bx

author
megb2786 made it! (author)2017-04-13

isnt it awesome

one-hundred-100-dollar-bill.jpg
author
Wyle_E made it! (author)2013-12-17

I get a "This video is private" message.

author
surfreak made it! (author)2008-08-04

Oil is more dense than water?

author
bumpus made it! (author)bumpus2008-08-05

Yes, Therefor the oil would be layered beneath the layer of water.

author
surfreak made it! (author)surfreak2008-08-06

...I don't know what kind of oil you're using, but no true oil is more dense than water. Maybe it's not actually lamp oil, but some other compound?

author
guy198 made it! (author)guy1982011-02-10

yea i think you got things backwards oil is less dence thts why it floats

author
TragicSnowfall made it! (author)TragicSnowfall2010-08-26

I've never seen oil that didn't rise to the surface, despite what the media might say.

author
wupme made it! (author)wupme2008-09-04

Sorry but thats wrong. The oil is less dense, and the oil layer is on top of the Water. You can even see that in your own picture....

author
white dough made it! (author)2010-08-27

It's very beautiful :D

author
ren7624 made it! (author)2009-11-18

haha ew.. its like a smaller version of a toilet..! haha

author
eonrobby made it! (author)2009-09-10

how much lamp oil to water? can cooking oil work too?

author
Foehammer358 made it! (author)Foehammer3582009-10-20

yes,any oil will do.

it doesn't matter how much oil

author
2cool4u made it! (author)2008-09-25

what's a tornado tube?

author
munchman made it! (author)munchman2009-01-13

Essentialy a double ended cap with a hole in the middle. You can make your own (The traditional way to do this) By taking 2 bottle caps, punching a hole through the centre of each using a nail, then glue the caps back to back , secure them together with duct tape or similar.

author
2cool4u made it! (author)2cool4u2009-06-14

thanks, but how does this work?

author
munchman made it! (author)munchman2009-06-15

Not a clue, but it does.

author
cheska.che made it! (author)2008-08-16

hmm... nice. it was just so easy.

author
GorillazMiko made it! (author)2008-07-19

Haha, I see your Instructables Robot paper model.

author
blugyblug made it! (author)2008-07-05

hmm.. i wanna make a REAL Tornado (small scale) with two fans and stuff.

author
firefighter1333 made it! (author)2008-06-30

they're really cool until it started leaking...

author
Keith-Kid made it! (author)2008-06-28

Great! I love making these! Nice picture in the intro! You should add it to step 4, so it looks better......That's just my opinion.......

author
bumpus made it! (author)bumpus2008-06-29

I'll do it later keith

author
GorillazMiko made it! (author)2008-06-21

LOL at: Do you remember your 6th or 7th grade Science Class? yeah, me neither, but.....

Nice Instructable, I want to try this out.

Haha I just realized that bumpus made this because you replied to Killerj's comment.

+5/5 stars.
(added to favorites)

author
GorillazMiko made it! (author)GorillazMiko2008-06-21

Also, can you add a video? That would be cool.

author
bumpus made it! (author)bumpus2008-06-21

Sure, no problem

author
GorillazMiko made it! (author)GorillazMiko2008-06-21

WELL, I'M WAITING!!!! Just kidding.

author
bumpus made it! (author)bumpus2008-06-21

well, my camera is charging, hold your horses

author
codongolev made it! (author)2008-06-20

ahem, *duct* tape.

author
Labot2001 made it! (author)Labot20012008-06-20

Duck brand duct tape.

author
codongolev made it! (author)codongolev2008-06-20

do you specifically need duck brand?

author
Labot2001 made it! (author)Labot20012008-06-20

No, I just think that was what he was referring too.

author
codongolev made it! (author)codongolev2008-06-21

well, I think some people think it's actually pronounced "duck" tape, and they always say it that way.

author
killerjackalope made it! (author)2008-06-21

Could you send me a few detailed pics of that tornado tube, they don't look too complicated... Also any luck finishing the logo thingy, I'm pretty intrigued by now...

author
bumpus made it! (author)bumpus2008-06-21

Sure killer j, what for pics do you want? and its getting there (lack of photoshop)

author
killerjackalope made it! (author)killerjackalope2008-06-21

I just want all round closeups of the tornado tube, to try and see if I can make my own...

author
=SMART= made it! (author)2008-06-21

i have a mug with a little fan at the bottom to stir the drink, i upped the speed and now it makes one of these tornados when i use it :P

author
Kiteman made it! (author)2008-06-20

I do these occasionally with my Science clubs, but we don't use tornado tubes.

We use a hot nail to melt holes in the caps of two bottles, then hot-glue them top-to-top, sometimes with duct-tape reinforcement.

They're not as pretty as the manufactured tube, but it means I can make twenty bottled tornadoes for almost nothing.

We also occasionally add a little glitter to the water, and one child once added a small picture of a cow, as a tribute to the film Twister.

author
bumpus made it! (author)bumpus2008-06-20

hahah, i was thinking about adding little train-set figurines...

author
Labot2001 made it! (author)Labot20012008-06-20

How old are your clubbers?

author
chooseausername made it! (author)2008-06-20

I added your instructable into the Class-Room group =o)

author
bumpus made it! (author)bumpus2008-06-20

sweet

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