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There are various theories as to where all the Earth's water came from, but several theories have fared better than the others. We know that the oceans existed as early as 100 million years after the formation of the Earth. When the Earth was in the process of forming, with a radius just 40% smaller than at present, it would have had enough gravity to hold on to a tenuous atmosphere with watervapor. The first water vapor on the planet would have come from the planet's internals, where volatile (low weight) chemicals would have a tendency to float to the top, and heavy chemicals (iron and nickel) would sink.
Though the first of Earth's water came about through volcanism, this alone probably didn't produce enough to form stable pools on the surface. More water was added to the planet during several hypothesized large impacts from asteroids from the outer asteroid belt. Comparing the isotope ratios of water on Earth and water from comets and asteroids has revealed that the majority of the Earth'swater comes from asteroids.
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How did rain start?
rain started as soon as water came to earth,because there is water there is the water cycle, evaporation,condensation and precipitation.In fact the water we all have today is the same water millions and billions of years ago because of the water cycle.
What pecent of the earth is water?
73% of the Earth is water, which is about 3/4.
Water on earth or earth in water?
It is more correct to say that water is on the earth. Though the surface of the earth is mostly covererd with water, the operative word is "covered." The water covers most of the earth's surface, so the water could be said to be sitting on the earth. Which it is.
What percentage of earth water is found in lakes?
don't believe that it is less than 3% as said on another answer, my answer is a professional one that came from explorelearning.com on the water cycle gizmo, the answer is 0.009%.
How the earth came?
I couldn't find the answer
How is water prudused?
Water is not produced. It is believed that all of the water on earth came from comets and other blocks of ice landing on earth from the solar system.
Where did the waters of the earth came from?
A mist used to rise from the surface of the earth and water the whole surface of the earth. Hope this helped!! :)
Scientists think the first water vapor on Earth came from?
From the oceans
Where water came from?
I comes from everywhere, because the water cycle enables water to move everywhere by the processes of evaporation, precipitation, sublimation, condensation and flow. Originally almost all the water on earth came from comets, and comets still contribute water to the earth every day.
Where does water came?
I comes from everywhere, because the water cycle enables water to move everywhere by the processes of evaporation, precipitation, sublimation, condensation and flow. Originally almost all the water on earth came from comets, and comets still contribute water to the earth every day.
Where does water came from?
I comes from everywhere, because the water cycle enables water to move everywhere by the processes of evaporation, precipitation, sublimation, condensation and flow. Originally almost all the water on earth came from comets, and comets still contribute water to the earth every day.
Where do water come from?
they come from clouds through precipitation but some people think that water came on earth when the meteors hit earth at the beginning of time and released water
What is a David Bowie film from 1978?
I believe "The Man Who Fell to Earth" came out in 1978, about an alien that came to earth looking for water to bring back to his dying planet.
Who said that all things came from water?
The Greek philosopher Thales of Miletus is credited with the belief that all things originated from water. Thales is considered one of the Seven Sages of Greece and is known for his contributions to early philosophy.
How did water come to planet earth?
a large ice asteroid came form space and hit earth malt with volcano
Where did oceans come from?
Well water in the seas came from glaciers that melter over time....When the earth freezes it freezes the water into glacires which melt into water...but if your asking where it came from before the age of man then no one knows where it came from.
What events happened in the past that allowed water to form and exist on Earth?
Most scientists believe water came in ice form on comets or meteors that crashed into the Earth.
