How does water stays on Earth's surface?

Answer 1

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.

Answer 2

Water stays on Earth's surface due to gravity, which keeps the water molecules pulled toward the center of the planet. Additionally, the presence of landforms such as lakes, rivers, and oceans provide basins for water to collect and remain. The water cycle, including evaporation and precipitation, helps maintain a constant supply of water on Earth's surface.

Answer 3

The water on the earths surface remains on earth mainly due the force of gravity, which keeps it from floating away.

Answer 4

The force of gravity causes the water on earth stay on it.

Answer 5

The gravitational force between the Earth and the atmosphere holds the atmosphere close, just like it holds you close to the Earth. (ground)