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Gravity keeps water on Earth. Note that if you consider water is just the liquid substance, this seems obvious, but if you consider it is also a gas (water vapour), which can move away from the surface of the Earth with the air , then it isn't so obvious. Nonetheless, water vapour, the molecule H2O, is still too heavy to escape the Earth's gravitational pull. As a contrast, consider Mars or the Moon, where water will not stay on the surface, and escapes into space, such that there is none left on those bodies. Other gases do escape, such as hydrogren or helium.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoThe water on the earths surface remains on earth mainly due the force of gravity, which keeps it from floating away.
Wiki User
∙ 14y agoThe force of gravity causes the water on earth stay on it.
Wiki User
∙ 11y agoThe gravitational force between the Earth and the atmosphere holds the atmosphere close, just like it holds you close to the Earth. (ground)
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What is Water that falls to earths surface from the atmosphere as rain snow sleet or hail?
Water from precipitation that stays on the surface, such as in lakes or streams is "surface water." Water which is absorbed into the ground (and stored in aquifers) is "ground water."
What percentage of earths surface water is ground water?
30%
What is the movement of water between earths surface and the atmosphere?
it is the water cycle
How does running water change the earths surface?
It can change
What is the 70 percent of the earths surface coverd by?
water
What is Water that falls to earths surface from the atmosphere as rain snow sleet or hail?
Water from precipitation that stays on the surface, such as in lakes or streams is "surface water." Water which is absorbed into the ground (and stored in aquifers) is "ground water."
What Continuous movement of water from Earths surface to the and back to earths surface?
it is water cycle
How much of earths oceans cover earths surface?
70% or 80% of water covers the earths surface
What is the water part earths surface Is the?
3/4 of the earth's surface is water.
What ocean makes up twenty percent of the earths water surface?
Indian Ocean covers 20% of water on the earths surface.
What percentage of earths water is surface water?
69%
How much of earths surface does not have water on it?
about 30%
What heats water on earths surface?
the sun
What reflects off earths surface?
Water.
What percentage of earths surface water is ground water?
30%
What is The constant recycling of water from the earths surface?
the water cycle
What is water called underneath the earths surface?
Ground water.
