General Question

jtvoar16's avatar

Is air effected by gravity?

Asked by jtvoar16 (2169points) May 21st, 2008 from iPhone

I was just thinking to myself, us air subject to gravity? If so, how much?

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10 Answers

xxporkxsodaxx's avatar

Yes, it is pulled to Earth at 9.8 m/s^2

bugmenot's avatar

Air is matter, thus subject to gravity. One noticeable effect of gravity’s pull on air is greater air pressure nearer to the surface of the earth: air at the surface bears the weight of the air higher up.

NoahD's avatar

yup. It works just like water – the more air above you, the heavier it is. We’re just used to how much air is at our normal altitude.

joeysefika's avatar

Everything is even Helium, that rises is subjected to gravity. Although because its upward force is greater than its downward force (i.e Gravity) it rises

mdy's avatar

I think we wouldn’t have an atmosphere at all if not for gravity. The moon, for example, has no atmosphere because its gravity isn’t strong enough.

AstroChuck's avatar

Ever heard of air pressure? It’s easier to breathe at sea level and more laboring to breathe in high altitudes. That’s gravity.

gailcalled's avatar

As everyone has said, Yes. Do a 5000 ’ hike that starts at 4000’ above . Check your panting rant as you ascend.

jtvoar16's avatar

ok, yes I understand all that. I was wondering, I guess, more wheher, air had enough mass to exit earths atmosphere, of its own accord.

Zaku's avatar

The force of gravity is proportional to mass, so the more mass something has, the more force it takes to lift it away from the planet, so “have enough mass to exit” would be said backwards. If you mean, does it have little enough mass, then, sort of yes and no, since it is about the lightest thing around, it ends up on top… and air is the atmosphere, without making too fine a point of it.

engineeristerminatorisWOLV's avatar

Indeed.That’s why the atmosphere is around the earth instead of escaping into the space.

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