Which is the best model for the origin of the oceans?

Which is the best model for the origin of the oceans?

As a result, the best current scenario for the formation of the oceans is a mix of water originating from comets and water caught up in the earth's rocky body as it evolved. The discovery that some rocks contain hydrous minerals suggests that at least some of the early Earth's water was in the form of ice.

However, most scientists believe that the majority of the oceanic water was formed through volcanic activity. The deep-seated explosions of volcanoes would have blown away much of the existing rock, creating voids that would have let in more water than had previously been present. This new water would then have covered other parts of the planet.

The amount of water on Earth now is estimated to be about 6 billion m3 (or million km3), with about 2/3 of it in the form of water molecules attached to hydrogen atoms. If the entire mass of Earth's water were to be released into space, it would make a significant contribution to the atmosphere of another solar system body such as Mars or Venus.

How did the oceans come to the Earth?

The enormous size of the reservoir sheds new insight on the origins of Earth's water. Some geologists believe that water came on Earth in comets when they collided with the planet, but the new discovery supports an alternate theory that the seas eventually flowed out of the early Earth's innards. The finding also has implications for the search for other worlds like ours.

Earth formed 4.5 billion years ago, and from its initial formation until today it has been engulfed by its parent star, leaving only a thin veneer of gas called atmosphere. Over time, the atmosphere lost weight as water vapor was blown away by winds and melted by the heat of the sun. If this process continued indefinitely, all of Earth would have been transformed into a giant oceanic planet.

But then something stopped it from happening. As far back as 1872, scientists guessed that Earth had a liquid core because of how planets with solid cores burn up at the end of their lives. In 1995, researchers made the first direct measurement of Earth's core temperature - it's 10,000 degrees Fahrenheit! This shows that Earth's core is always hot even when its surface is cold or warm because the core is deep down where the heat stays constant.

Also in 1995, scientists discovered evidence of water molecules under extreme pressure about half way up Earth's crust.

How did Earth’s early oceans form this quizlet?

How did the Earth's first oceans form? Volcanic eruptions sent water vapor into the atmosphere, where it condensed to produce rain, which was subsequently deposited on Earth's surface. The chemical signature of comets in the Kuiper belt is comparable to that of water on Earth. This may indicate that comet impacts were one of the sources of water on early Earth.

Early Earth probably had a very different climate from today, with no ice caps or cold seasons. There might have been only one ocean covering most of the planet, and it could have dried out completely several times.

The last time this might have happened was about 535 million years ago, when a huge amount of water vapor was released into the atmosphere due to an eruption of Mount Mazama in what is now Oregon. This caused global temperatures to rise by 10 degrees Celsius (18 degrees Fahrenheit), which would likely have led to the extinction of the dinosaurs.

Earth's current climate is called "subtropical" because it has two main seasons: a hot season and a cold season. During the hot season, which is around the summer in most places, there is much more sunlight than normal temperatures, so most of the water on Earth is found in the form of ice. During the cold season, which is around the winter in most places, there is less sunlight than normal temperatures, so most of the water on Earth is found in the form of liquid water.

Where does the water in the oceans come from?

Some scientists believe that comets, asteroids, and meteorites contributed to the water in the seas. A carbonaceous chondrite is a kind of meteorite that contains a lot of water. "kar-BUN-ay-shus KON-dryt" is how it's pronounced. Scientists have recently focused their attention on the water in chondrites. They believe that if enough of these rocks were to be found with all their water still trapped inside them, it could account for half of the Earth's water.

Other scientists think that the Earth formed with most of its water already on board. But over time, they say, particles from space have fallen onto the planet, bringing with them ice crystals containing hydrogen molecules and other chemicals that are able to break down rock.

Still others suggest that the Earth's oceanic waters came from somewhere else outside of our planet. A few scientists believe that there might be another world out there called "Triton," for example, where large quantities of water exist in an atmosphere made up mostly of nitrogen and oxygen. This would explain why we don't see any evidence of life on Triton but it wouldn't explain how the planet's animals were able to travel across interstellar space to reach Earth.

I hope you enjoyed this video about where does the water in the oceans come from? As always, please let me know what you think about this topic in the comments section below. Thanks for watching!

Where did the water for the ocean come from?

This liquid water pooled in discrete depressions on the Earth's surface, eventually becoming the fledgling seas. The source of this surface water is called the hydrosphere. It includes oceans, lakes, rivers, and ice caps.

Oceans are a major component of the hydrosphere; they contain 70% of the water on Earth. Oceans cover 71% of the surface of the planet. They consist of saltwater mixed with some fresh water that collects in special places such as polar regions and coastal areas.

The moon also plays an important role in shaping the Earth's water cycle because its gravitational force causes objects on or near its surface to fly off into space. This includes clouds, which drop their moisture back down to the Earth when they cool down at night.

Rivers are important components of the hydrologic cycle because they carry water from where it is available to places where it is needed. For example, the Amazon River carries water from the snowcapped Andes Mountains all the way to the Atlantic Ocean. Lakes are important too because they can hold more water than the surrounding land and so play a role in regional climate patterns.

About Article Author

Walter Hall

Walter Hall is an avid reader and seeker of knowledge. He enjoys learning about new things, such as planets, minerals, and metals. Walter also likes reading about other topics such as education reform and the Common Core State Standards.

Related posts