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There are only a few ways Earth could have gotten its water.
1. Water was present when Earth was originally formed from the gas and dust cloud that created the solar system and was part of the original mass that condensed to form Earth.
2. Water was delivered to Earth after the initial formation, primarily in the form of a cometary bombardment. Comets at the time of Earth's early years would have been nearly the same composition, with much water, as they are now. There is much reason to believe that all planets have had significant bombardments.
3. Water, was formed by combining hydrogen and oxygen through chemical processes to form water after the initial formation of Earth. (There are good chemistry reasons to expect this was unlikely.)
Though all three occurred to some degree, the real debate is over how much. Certainly, a lot of water was present during the formation of Earth. The last possibility of additional water being added through a chemical process is believed to have been a very minor factor. The real question that remains is whether extraterrestrial sources, like comets, provided most or only a little water.
A more thorough discussion of these and other possibilities is provided in the related links.
What else can I help you with?
Which part of earth gets the least percentage of water?
Antarctica receives the least percentage of Earth's water due to its ice-covered continental landmass, which contains about 70% of the world's fresh water in the form of ice.
How water is formed on earth?
Water on Earth was formed during the early stages of the planet's development through a process called accretion, which involved the collection of water-rich materials from the solar system. Additionally, water was brought to Earth by comets and asteroids that impacted the early Earth, contributing to the formation of oceans and the water cycle we see today.
What does heat radiated from Earth's surface do?
Heat radiated from Earth's surface gets absorbed by greenhouse gases in the atmosphere, such as carbon dioxide and water vapor. These gases trap the heat and re-radiate it back towards the surface, creating a warming effect known as the greenhouse effect. This natural process helps regulate Earth's temperature and maintain conditions suitable for life.
What form is most of the energy that earth gets from the sun?
The majority of the energy Earth receives from the sun is in the form of sunlight, or solar radiation. This energy drives various processes on Earth, including photosynthesis, weather patterns, and the water cycle.
Are there any great circles on the Earth that are entirely in water?
Yes, there are great circles on Earth that are entirely in water, such as the Equator or the Prime Meridian. These circles divide the Earth into two equal halves and are significant in navigation and geographical reference.
Where do you think the water cycle begins?
The water cycle start from earth's surface. Water gets evaporated from the surface.
How does space shuttles get there water and electricity?
The shuttle takes water from Earth and gets electricity from solar panels.
Where does evaporation occur in the water cycle?
Evaporation occurs at earth's surface. Water gets evaporated to air.
What happens to water that falls as precipitation and does not runoff and flow into streams?
It gets absorbed into the Earth.
Why water gets into the atmosphere?
So it can be recycled and used on the Earth repeatedly(rain, snow, etc.)
How does heat gets from the sun to earth?
It gets to the Earth by RADIATION.
Which part of earth gets the least percentage of water?
Antarctica receives the least percentage of Earth's water due to its ice-covered continental landmass, which contains about 70% of the world's fresh water in the form of ice.
When is the water cycle completed?
It gets completed when water comes back to earth. It comes back int he form of snow, rain or sleet.
The water cycle is also called the?
The water cycle is also called the hydrological cycle, and it describes the continuous movement of water on, above, and below the surface of the Earth.
Where does natural spring water come from?
From groundwater, which gets there via rain, molten snow, etc. It's usually clean as it gets filtered while seeping through the earth
Does social behavior have to do with living organisms on earth?
yes,the pollution and oil that gets into sea water can hurt animals. -mayura
What is a negative human impact on the world?
We spray poison over the earth to kill bugs which gets into the water which effects everything.
