Why the air surrounding the Earth does not escape into the Space since Space is nearly a vacuum? Is it because of Earth's gravitational pull than the pressure of the air to esacpe into the Space? If it is so, if you hold a vacuum bottle with the opening facing downwards, why air still rushes upwards into the bottle?
2006-09-06 23:52:56 · 7 answers · asked by sun s 1 in Science & Mathematics ➔ Earth Sciences & Geology
Air does not scape because of the earth gravity. Nevertheless, very light gases, like hydrogen, can scape into space. Earth gravity is not strong enough to hold accelerated hydrogen gases.
Respect to the vacuum, the air pressure is the answer. The air pressure acts with the same force per area unit in all directions. Air moves from high pressures zones to low pressure zones that's how winds are produced (the center of a storm is always a low pressure area, the lower the pressure, the strongest the storm).
So if you have a vacuum, the air will quickly move to equilibrate with the surrounding pressure.
It seems that you are comparing why air does not scape from a bottle when you put it in water if it is upside down. That is different, there is air in the bottle. The air has a pressure and needs to scape to allow water going in. If you put a vacuum bottle upside down in water it will be filled with water. So it is different.
Try this, put a candle in a plate with water. Then light the candle and cover it with a long glass (that needs to cover the candle and touch the water. See what happens. It is very illustrative.
2006-09-07 07:35:15 · answer #1 · answered by Scientist13905 3 · 0⤊ 1⤋
Nature abhors a vacuum. That is to say that the natural world wants to destroy a vacuum here on Earth. There are naturally occurring vacuums. There is a phenomenon called cavitation that you can sometimes see in a small waterfall. It looks like a bubble caught under the backside of the waterfall. It is actually a small vacuum bubble. It cannot escape its small world because the air wants to destroy it.
The air filling the vacuum bottle is because that gravity is not so strong as to prevent it from happening. If it were, everything on this planet would be smashed into a thin layer of, oh, about a foot against the ground.
2006-09-07 00:05:03 · answer #2 · answered by damndirtyape212 5 · 0⤊ 0⤋
No, acceleration isn't some type of friction. in truth, friction retards acceleration. both in the international and in area. In area, as you eject light-weight mass, yet that has an really extreme speed, out the again end of your spaceship, you flow contained in the different direction from the ejected cloth. that's the premise of a rocket motor, the burning of the gasoline and oxidiser creates a extreme speed exhaust which works out the again end of the deliver. once you boost up as a lot as a speed, and turn the rocket off, until eventually and until eventually you're affected by technique of yet another employer, which contain the gravity of the daylight, or a planet or moon, you'll proceed to flow interior an similar direction and an similar speed as you've been once you became off your rocket motor.
2016-11-06 19:32:15 · answer #3 · answered by ? 4 · 0⤊ 0⤋
The air doesnt escape because of the gravitational pull - the air rushes into the bottle because of ... umm.. thermodynamics.
2006-09-06 23:57:11 · answer #4 · answered by D J 2 · 0⤊ 1⤋
One word: Gravity. You can thank Sir Isaac Newton for that one.
2006-09-07 06:31:49 · answer #5 · answered by Amphibolite 7 · 0⤊ 1⤋
gravity is the answer for both
2006-09-07 04:56:07 · answer #6 · answered by raghulmad 2 · 0⤊ 1⤋
INTERESTING
2006-09-06 23:55:14 · answer #7 · answered by Anonymous · 0⤊ 0⤋