If Earth lost its gravity or had no atmosphere How would the water fall of?

Question

...yeh i know that but what would happen if it did? just like the other planets

Answer 1

It wouldn't

Everything has gravity, it all depends on the mass of the object, if you are saying hypothetically there is no such thing as gravity then it would float off in to space as would everything else not tied down

Answer 2

That's a big question, the earth's gravity is the sum of all the gravity of all the particles making up the earth. Each particle contributes to the gravity of the earth. So "if the earth lost it's gravity" means "if all matter known to us would have no gravity", so it's more than water that would be lost from the earth.

Narrowing the question down a bit, to how could water be lost from earth, well it could evaporate, and become part of the atmosphere (as a lot of water already is), and if the earth's gravity was not sufficient to keep the atmosphere pulled towards the earth, the contents of the atmosphere would simply dissipate (wander off) into space.

All of the contents of the atmosphere, including the evaporated water, would become mini-meteorites, which would end up landing on other planets (or bodies, or black holes) which had sufficient gravity to trap them within their own atmospheres.

Answer 3

In this case the first would actally cause the second to happen.

If hypothetically the earth lost it's gravity, the atmosphere would simply float away. This is due to the fact that the atmosphere is moving with the rotation of the earth and as it spins is pulled back down by gravitational force of the earth. Immagine a coin on a page with a dot representing a unit of air, if you spin the coin with gravity in place, the piint would stay in contact with the coin. If there were no gravity, the point would continue travelling in a straight line and thus leave the coin and travel off into space. The same would be the case for the water in the sea, and for that matter everything else on the planet.

If you want to recreate the effect of this, get a disc of cardboard and poke a pencil through the middle of it. Then soak the disc in water and rub the pencil between your fingers so that the disc spins. If you spin the disc fast enough, the warer will 'fly' off the disc, as the force holding the water on is not stron enough to resist the inertia of the water, which will try to travel in a straight line.

Answer 4

If you some how can jump with a higher velocity than the escape velocity, speed required to escape Earth's gravitational pull, you could "float" away from Earth and never come back. You would probably die before you reached the moon's orbit if you somehow survived the exit from Earth's atmosphere and such. There would be an extremely large amount of pressure on your body; imagine what a spacecraft has to go through when carrying astronauts/ equipment into space and it's made of metals. But if you were able to survive the that, you wouldn't have water and other necessities of life. How would you expel your waste and such?

Answer 5

You included two very different questions in one sentence.
a) no atmosphere
b) no gravity

In case of (a) the water would still be under gravitational pull and stay on the surface. Of course, it will be subject to evaporation, effectively creating a thin atmosphere of vapor :)

b) if there were no gravity, due to the rotational motion of the Earth, water would just float away alongstraight lines with a linear velocity that it now has due that rotational motion. Please draw a diagram and try to understand the direction of the velocity vector in each point.

Answer 6

In the absence of any atmospheric pressure the water would boil away and, in the absence of gravity, the resulting steam would drift away into space, tangential to the earth's rotation, and at a speed depending on the rotational speed of the earth at that point.

Answer 7

No gravity, it'll just float away... Once a force acts upon it,
like the earth spining.

Plus with no atmosphere it would evaporate VERY Quickly!!!

No Clouds see!

Answer 8

First you have to tell how the earth lost it's gravity. Assuming it looses its gravity despite it's mass in tact ( which anyway against known physical laws)The Water will gush out outward radially from the centre of the earth to disappear in the great vastness of The Great universe in matter of seconds.,

Answer 9

The water would not "fall" off it would boil off in the form of steam because without atmosphere the sun's heat would be immense.

Answer 10

The end of the world is coming. We will find out.