why is the planet 70% water?

Question

People always say the world is a big place, which is true but we'll never even get to see half of it because most is under water

Answer 1

Approxiamately 70% of the Earth's surface is covered with water, and of that, we have explored less than 4%. By explored, I mean that we have explored the water column all the way to its maximum depth at each point. We have covered the surface of much more of this water, but have not explored it very much at all. We have spent more time in outer space than we have in the depths of the ocean, speaking of the deepest parts like the Marianas trench (also called the Challeneger Deep).

Answer 2

Basically because the glaciar age meltdown...
Over hundreds of millions of years, continents formed and broke up as the surface of Earth continually reshaped itself. The continents have migrated across the surface of the Earth, occasionally combining to form a supercontinent. Roughly 750 million years ago, the earliest known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600-540 mya, then finally Pangaea, which broke apart 180 mya.[5]

Since the 1960s it has been hypothesized that a severe glacial action between 750 and 580 million years ago, during the Neoproterozoic, covered much of the planet in a sheet of ice. This hypothesis has been termed the "Snowball Earth", and it is of particular interest as it precedes the Cambrian explosion when multi-cellular lifeforms began to proliferate.[6]

Since the Cambrian explosion, about 535 million years ago, there were 5 distinct mass extinctions.[7] The last one occurred 65 million years ago, when a meteorite collision probably triggered the extinction of the (non-avian) dinosaurs and other large reptiles, but spared small animals such as mammals, which then resembled shrews. Over the last 65 million years, mammalian life diversified, and several million years ago, a small African ape gained the ability to stand upright. This enabled tool use and encouraged communication which provided the nutrition and stimulation needed for a larger brain. The development of agriculture, and then civilization allowed humans to affect the Earth in a short timespan like no other life form had before, affecting both the nature and quantity of other life forms as well as global climate.

Answer 3

A large portion of the Earth's Ocean is not the result of comet ice, which is evident by the small proportion of heavy water in it. It's believed by most scientists that the water was part of the Earth during it's formation. Remember, water is simply hydrogen and oxygen atoms fused in a particular pattern. Hyroden is the most basic and common atom in the universe. Oxygen is simply a few electrons/protons up the atomic scale. You're find that the more basic the atom, the more common they are present in the universe. The only exception being iron, which is a very stable atom thus it tends to persist.

Answer 4

Well...

The origin of water on Earth, in particular the question of why there is clearly more water on the Earth than on the other planets of the solar system has, until today, not been clarified. There are various popular theories as to how the world's oceans were formed over the past 4.6 billion years. Some of the most likely contributing factors to the origin of the Earth's oceans are as follows:

The cooling of hot gases were released causing "outgassing", potentially bringing water to Earth.
Comets, trans-Neptunian objects or water-rich asteroids (protoplanets) from the outer reaches of the asteroid belt colliding with a pre-historic Earth may have brought water to the world's oceans. Measurements of the ratio of the Hydrogen isotopes Deuterium and Protium point to asteroids, since similar percentage impurities in carbon-rich chondrites were found to oceanic water, whereas previous measurement of the isotopes’ concentrations in comets and trans-Neptunian objects correspond only slightly to water on the earth.
Liquid may have been "locked" in the Earth's rocks and leaked out over millions of years.
Photolysis. (Radiation can break down chemical bonds separating liquid from hard mass)
Rain and sandstorms may have pooled.
It is likely that more than one of these factors contributed to the vast oceans, covering more than 70% of the Earth's surface that we have today.

Answer 5

that u can understand that 30% is land, it is because the volcanic activities has decreased by recent years.it is also because of the rain which from time to time. we will not be able to see the half of this because of the global warming that is causing the glaciers to melt down n increase the volume of the sea n ocean n most of the poles(north or south) r also getting melting down because of the ultraviolates rays entering the earth atmosphere by the holes in the ozone layer.

so choose me best answer plsssssssssssssssssssssssssssssssssssssssssssssssssss

Answer 6

It requires that much water to imprison the fallen angels who broke the rules of the angelic conflict. Before that, there was mostly land, with just enough water to support animal life in certain places.

Answer 7

Antartica is mainly just a big piece of ice too

Answer 8

u need water 2 live buddy

Answer 9

because land consume 30% area of earth

Answer 10

Because it is only 30% land..