what if you got a huge round tube made out of plastic hard plastic and the walls of this tube were air tight. the hole will be the size of a football field(the two holes at each end of the tube). and the ozone has been sucked out of the tude. would it be like a vacume and suck all the air out from the earth. and if it could be done could you make a smaller one and as it is sucks the air out you could let go of it and it will just float in the air. the pressure would have to be equal.but maybe it is, if it wasnt then there would be no air. space would suck it all out.i wonder if the gravity of earth is equal to the pull of space(gravity keeps everything from floating away earth is OUR sorce of gravity, what if it keeps the air on earth. if this is true then the vacume of space has to be equal to the pull of gravity)..i may be stupid but eh. "i was gonna get up and find the broom" lol...im keepin it on the downlow..lol im sorry

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"I want to know God's thoughts; the rest are details."
-Albert Einstein-

The air does not stay on Earth because of the ozone layer, it stay on Earth because air is heavy. It may not feel like it, but the weight of the air above your head is so much that the air around you exerts tends of thousands of pounds of force on your body.

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I met this wonderful girl at Macy's. She was buying clothes and I was putting Slinkies on the escalator.
-Steven Wright



My Website: The Black Cat's Web Page

Hole? You said it was airtight. Do you mean the volume enclosed? But, the volume of a planar football field is zero. Maybe a cross-section of the enclosed volume has the area of a football field?

Just the ozone, leaving all other atmospheric gasses?

What is it that is sucking out the air? Oh, now you're removing air, not just ozone. OK. Yeah, if the mass of the air-tight container is small enough, and rigid enough to maintain the volume, then as you evacuate its contents, it will become bouyant. That's difficult, though. Easier is to insert a low-mass gas of equal pressure to the air, like hydrogen or helium, to maintain the shape.

You're losing me.

You're really losing me. How did outer space get involved?

Uh... Anyone else?

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I think he is thinking the ozone layer is some sort of wall that prevent the atmosphere from being sucked into the vacuum of space. Assuming that is the case I dealt with it in the post directly before yours.

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I met this wonderful girl at Macy's. She was buying clothes and I was putting Slinkies on the escalator.
-Steven Wright



My Website: The Black Cat's Web Page

there is that experiment where you heat up a oil can(with some water in it) thus displacing the air in the can with steam, you put the lid on it and then let the can cool down as the steam condenses you are left with a partial vacuum in the can and the can is gradually crushed by atmospheric pressure.

You don't need to go that far. Empty a soda can then put a little bit of water in it. Have a pan full of water on the stove and boil it. Have a saucepan or basin or something full of cold water right next to it. Place the soda can in the pan full of boiling water. Once steam starts coming out of the mouth of the soda can, use tongs (NOT YOUR HANDS) to quickly flip it over into the basin full of cold water so the can is now upside-down with its mouth an inch or so underwater (be careful to stand back so you don't spill any water on you). It will instantly implode as the water and steam in the can quickly contract when they hit the cold water. It is an easy and amusing trick you can do with only household objects. Kids should not use the stove under any circumstances, parents need to handle the boiling of the water and watch the proceedings very carefull. Kids could probably use and apron or jeans at the very least and long-sleeve shirt to keep boiling water off themselves just in case.

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I met this wonderful girl at Macy's. She was buying clothes and I was putting Slinkies on the escalator.
-Steven Wright



My Website: The Black Cat's Web Page

air would not be heavy if it wasnt for gravity..like...the earth weights nothing. because it is surrounded by nothing...or...im just thinking out loud but hey i made some touchups to the thread so it may help you understand what im asking...but maybe not

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"I want to know God's thoughts; the rest are details."
-Albert Einstein-

Don't confuse weight and mass. They are not the same thing.

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"I'd take the awe of understanding over the awe of ignorance any day." - Douglas Adams

im not confusing weight and mass.nothing has weight without the intervention of gravity. like, how much does a nickel weigh, on earth it is 5 grams but on the moon it is less and on jupiter it weighs more but in space it weighs nothing.sence gravity verys planet from planet wouldnt you call it..unstable?

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"I want to know God's thoughts; the rest are details."
-Albert Einstein-

No. It is a perfectly calculable function of mass and distance. The weight of your nickel changes because the mass of the planet doing the 'pulling' is different, not because of any instability of 'gravity' per se.

Calling it unstable is like saying the colour Red is unstable because an apple looks different in bright sunlight compared to when you are in dark cellar.

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"I'd take the awe of understanding over the awe of ignorance any day." - Douglas Adams

does anyone understand what im asking in this thread? just like a vaccume would suck water out of a bowl would a tube penitrating the ozone with all the ozone gasses sucked out of the tube at first...after all the ozone gases were out of the way. would space suck out all the air on earth. i have wondered this since junior high

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"I want to know God's thoughts; the rest are details."
-Albert Einstein-

I think what you are asking, if one took a huge tube that went from close to the ground, through the ozone layer, to outer space, would the air be sucked through the tube, into outer space.

If that is what you are asking, the answer is no. As has been said, the ozone layer is not holding the atmosphere in, there is no "lid" to this pot. The gravitational field of the Earth and the mass of the atmosphere itself hold it "in place". None of that would change with some big tube.

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At night the stars put on a show for free (Carole King)

No, it wouldn't suck the air away.

Think of the air as being really old milk. (No wait...I'll tie it in)

When you first get milk it's all one color and mixed in very well. as it gets older it starts to separate. After a while it has split into three disinct layers. There is the heavy thick layer at the bottom, the watery milk layer in the middle and the very thin water like layer at the top. I think that's how you are seeing the atmopshere. A layer of regular air with a layer of Ozone floating on the top. The problem with your interpretation is that, like that thin layer of stinky milk water, the ozone layer isn't going to keep anything from getting in or out (UV not included). If there were no Ozone layer, the Earth would still have an atmosphere becasue the gravity is pulling the air down to the surface.

The 'vacuum' of space isn't a vacuum like you use on a rug. It's not actually sucking anything. Basically, evertything hates crowds. Bob the Air Molecule wan't to have as much room as he can get so he will move to a more empty place unless something keeps him in the crowd. A balloon is a good example. Inside a balloon the air has pressure. It's a higher pressure than the outside air, so when a balloon is onpened the air rushes out. It's the skin of the balloon that keeps the air in.

The Earth's gravity is similar to the skin of the balloon. When Bob decides it's too crowded in the balloon, and he sees the opening, he rushes to it. Nothing is pulling him out. Once Bob is in the air, he wants to move off to space, but he can't because gravity is just too fascinating to him. He HAS to stick around. If, all of the sudden, the earth were replaced with a huge sphere of "frozen smoke" It's gravity would be reduced to the point Bob would leave and no lousy ozone layer could stop him. To an observer Bob is BLOWN into space by the rush of other air molecules wanting more room, just like him.

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A Nerd can figure out how long it will take the original Enterprise traveling at warp 6.5 to travel from Regulus to Antares.
A Geek will think he can use that to pick up a girl in a bar.
A Dork knows he can't pick up the girl with it, but will hang around for hours anyway, just in case she asks.
She might. You never know.

Bob the Air Molecule?


Actually, air mostly consists of Olivias and Nicks, but they're just friends.

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At night the stars put on a show for free (Carole King)

i understand. but...say you get an actual balloon and fill it with air and you take the balloon with you into space once you got the balloon outside the shuttle would it expand? if so that would mean that space is kinda like a vacuume and if this is true wouldnt the gravity of earth have to be equal or greater than the 'pull' of space....maybe

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"I want to know God's thoughts; the rest are details."
-Albert Einstein-

im thinking of gravity as being exactly oposite as space...because it is. space has no gravity and the only reason air has weight is because of gravity produced by earth and its mass.the post that i posted before this one does it make since because it seems like it does

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"I want to know God's thoughts; the rest are details."
-Albert Einstein-

It would expand and one of two things would happen. One, the compressive force of the ballon would eventually balance the expansive force of the air and the balloon settles into a new, larger size. Two, the expansive force of the air is too great for the balloon and it would pop.

As others have mentioned, there is no "pull" of space. In the case of the balloon, it's not space that is pulling on the balloon and making it expand, it's the pressure of the air inside.

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"A mystic is a person who is puzzled before the obvious but who understands the nonexistent." -- Elbert Hubbard

Yes the balloon would expand if you took it outside the shuttle, but not because space is 'sucking' it's because Bob (and Olivia and Nick and the rest) see there is NO ONE else out there and they want to get some of that room for themselves

To put it in more formal terms, at sea level the air presses in on everything at 15 pounds per square inch. This isn't a stright down pressure like being sat on, it's an all around pressure like a bear hug. This pressure comes from the huge volume of air being pulled down by gravity. When you fill a balloon you may get 30 PSI into it. The skin of the ballon sqeezes in with say 20 psi, and the air pressure squeeses in with another 15. When you open the valve on the ballon that pressuer squeeses the air in tha ballon until it rushed out of the hole. It's not being sucked out. When you take the ballon into space where there is NO air pressure, then only that 20 PSI worth of squeeze from the balloon's skin is working to hold that 30 psi in. The ballon expands and pops. If the ballon had 20 psi in it, is would still expand but wouldn't pop. It would be stretched to the absolute limit though. Once the valve is opened, the air in the balloon has all of space to fill so it rushed out to find that bit of nothing it can call it's own.

If this doesn't work I have an airplane, bus, cruise ship, or subway/Tube/El train one that I just worked up.

And Swift... All my examples feature Bob and Jill. That way I can keep the pronouns different and not have to say something like, "So when Dave and Fred went to the store, he went to get eggs while he waited in line." It made a martial arts project I did a LOT easier, then it just seemed to stick with me. That Bob gets around.

__________________
A Nerd can figure out how long it will take the original Enterprise traveling at warp 6.5 to travel from Regulus to Antares.
A Geek will think he can use that to pick up a girl in a bar.
A Dork knows he can't pick up the girl with it, but will hang around for hours anyway, just in case she asks.
She might. You never know.