Earth is the third planet from the sun and the only object in space that supports human life. Radiometric dating states that the earth was formed 4.5 billion years ago. It is usually called “Watery Planet” because most of its land area is covered by water. Earth is among the few exoplanets in the universe as it possesses liquid water.
Why do scientists call Planet Earth the water planet?
Earth is the third planet from the sun and the only object in space that supports human life. Radiometric dating states that the earth was formed 4.5 billion years ago. It is usually called “Watery Planet” because most of its land area is covered by water. Earth is among the few exoplanets in the universe as it possesses liquid water.
Is Earth the only planet to have water?
Earth is the only planet in our Solar System that has stable bodies of liquid water on the surface. On any other planet (or moon, asteroid, etc.), liquid water would immediately evaporate or freeze. There are several places in the Solar System that could potentially have underground rivers, lakes or even enormous oceans.
Why does water only exist on Earth and other planets?
Why? Because on Earth, almost everywhere there is water, there is life. Whether the water is boiling hot or frozen, some sort of creature seems to thrive in it. Is it the same on other planets? If water once flowed on Mars, did life once thrive there too? Or, maybe there is still water on Mars, only it has gone underground.
Why does the Earth have so much water?
So why does the Earth now have so much water, both in its mantle and on its surface? The prevalent hypothesis: hydrogen delivered to Earth by hydrated asteroids. Some meteorites, called chondrites, come from small asteroids that, unlike the planets, have not geologically evolved since their formation. They are good witnesses of the first ...
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Which planet is called water planet and Why?
Description: Comparing the amounts of land and water on Earth's surface leads students to discover why it is called the water planet.
Why is the Earth called the water planet Brainly?
Answer: The earth's surface is 70% water. Earth is called the water planet because it has water to sustain life.
Why is Earth called blue or watery planet?
Planet Earth has been called the "Blue Planet" due to the abundant water on its surface. Here on Earth, we take liquid water for granted; after all, our bodies are mostly made of water. However, liquid water is a rare commodity in our solar system.
What is called water planet?
Earth is known as a watery planet. Almost 75% of Earth is covered by water in the form of a liquid state as well as in a frozen state. Hence, Earth is known as a watery planet.
What is the surface of the Earth made up of Class 9?
Expert-verified answer It consists of rock that contains silicon, iron, magnesium, aluminium, oxygen, and other minerals. The crust is the rock surface of the Earth. It consists of oxygen, aluminium, silicon, iron, and calcium.
What are the two features of the Earth?
You see that the surface has two main features: continents and ocean basins.
Why is the Earth called the Blue Planet Brainly?
Earth is known as the 'blue planet' because of the wast oceans that cover two-thirds of its surface. When seen from space, our world looks like a pale blue dot.
Why Earth looks blue from space?
When sunlight reaches the water; the water absorbs, lights of all colors in the white light and reflects only blue light. Thus, the earth from space appears blue. If the water absorbs all colors and reflects only yellow, then it would appear yellow.
Which planet is known as the Red Planet?
MarsMars is known as the Red Planet. It is red because the soil looks like rusty iron. Mars has two small moons. Their names are Phobos (FOE-bohs) and Deimos (DEE-mohs).
Is Earth the only planet with water?
Evidence points to oceans on other planets and moons, even within our own solar system. But Earth is the only known planet (or moon) to have consistent, stable bodies of liquid water on its surface. In our solar system, Earth orbits around the sun in an area called the habitable zone.
Is Earth a water world?
Earth may have been a water world 3 billion years ago. Calculations show that Earth's oceans may have been 1 to 2 times bigger than previously thought and the planet may have been completely covered in water.
Where is the Earth called the water plant?
Since, earth is the only planet in the solar system which contains water on its surface so it used know as watery planet. Earth contains 71% i.e 3/4 of the surface of the earth contains water so it is called as the watery planet.
What percent of fresh water is present on Earth?
3%3% of the earth's water is fresh. 2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost. 0.5% of the earth's water is available fresh water.
How many planets are there in our solar system name them?
The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury is closest to the Sun. Neptune is the farthest. Planets, asteroids, and comets orbit our Sun.
Why Is Earth A Watery Planet?
Approximately 71% of the earth's surface is covered by water. As a result, it is fondly referred to as the “Watery Planet,” “Blue Marble,” and “Blue Planet.” Water exists in three forms: ice, liquid, and gas. Continental glaciers or ice sheets permanently cover about 10% of the earth, concentrated in Greenland and Antarctica. Liquid water exists in lakes, oceans, rivers, springs, and rocks among others. However, it also exists in the form of clouds that cover about half of the earth. Water in the form of gas exists in the atmosphere of the earth.
Why is the Earth called the Blue Planet?
Earth is known as the "Blue Planet" due to its extensive water coverage.
How did water originate?
Water is believed to have originated from the collision of meteors and comets billions of years ago . More specifically, these intense and destructive collisions took place 3.9 billion years ago resulting in the creation of the present oceans and atmosphere. While the oceans have salty water, the earth receives fresh water from the sky in the form of rains.
What is the water cycle?
The water cycle is responsible for the movement of water from one point on earth to the other. Water movement is also caused by the tectonic plates which cause volcanic and metamorphic activity. These plates are associated with the formation of the earth’s seven continents: Asia, Europe, Oceania, South America, North America, Africa, and Antarctica. In addition, volcanic eruptions regularly extract gases and water from rocks found in the earth’s interior. Seawater flows through fractured volcanic rocks.
What are the bodies of water on Earth?
Other bodies of water include rivers or lakes, springs, rocks, and rock holes, excavated dams, wells, and aquifers. Aquifers are freshwater reserves found underground.
Why is water important to life?
Water’s sole significance on earth is to support life as it sustains the lives of both humans and other living things existing on earth. Human beings utilize water for various purposes such as cooking, washing, recreation, farming, drinking, and sports. As a result, humans consume billions of gallons of water daily. Besides water being an essential component in their environment, human bodies also depend on water for survival. Scientists have discovered that two-thirds of the human body is composed of water. Thus, the earth’s rich and diverse life forms rely on abundant water.
How has globalization affected the availability of water?
Globalization and global warming have greatly affected the usage and availability of water on earth. Since globalization has led to increased farming, to feed the increased earth’s population more water is required for human existence. Besides, the lifestyle of the 21st-century people demands more water than was needed in the past. Statistics indicate that some cities have to pump about 504 billion of water across 27,000 km to provide water for households, companies, and commercial residential premises. Global warming has resulted in climate change leading to either scarcity of rains or excess rains that cause natural disasters like flooding, cyclones, and tsunamis. The Global Environment Facility (GEF) is a body that was formed in 1992 during the Rio Earth Summit. At the core of its objectives is the future water sustainability. Thus, it engages countries in discussions aimed at addressing unsustainable use of water, planting tree campaigns, conservation of water, and protection of the environment.
How much of the Earth is covered by water?
Over 70% of the earth is covered by water.
How much water is on Earth?
The surface of Earth is about 71% covered with water, this has given the Earth the names such as “Blue Marble” and “Blue Planet”. This, in conjunction with the fact that water is vital for life on Earth, but especially for its dominant species, has earned it the name “water planet”.
How deep are the oceans?
The average depth of the oceans is 3657 meters, compared to the radius of the Earth which is 6,371,000 meters. To have a better perspective, if the Earth was same size of an orange (15 cm diameter), the depth of the oceans would have been as thin as 43 micro-meter (thinner than a paper which is on average 100 micro-meter thick)!
How does the Earth compare to a house?
Earth can be compared to a house with excellent plumbing. All its faucets work immediately and whenever water is wanted just turn the easy turning handle. The water appears instantly and fills the showers, the tubs, the sinks, the toilets, the water sprinklers, the hoses, the pails. The water comes to this house, the Earth from under the ground and all the pipes supplying the water are always clear and well supplied with water and there is never any insufficiency of water in this house and people have gotten used to calling it the 'water house'. There is a house down the street that has even bigger pipes underneath that house that potentially can supply that house down the street with even more water than the 'water house' but that house down the street has terrible plumbing. None of its faucets work. They are all rusted and will not turn so nobody has known that underneath that house down the street there is actually more water potentially available but it is not accessible and nobody has known that either. People have gotten used to calling this house down the street the 'dry house'. Then there is a house even further down the street that to appearances is rather alien looking to the 'water house' and although people sort of know it might potentially have pipes under the ground that could have water in them, people have not ever seen any faucets in that house. They have never even seen any showers, tubs, sinks, toilets, water sprinklers, hoses, or pails at that alien looking house. That house looks to people as though it has been frozen in time covered with strange markings. So the people call the Earth the 'Water planet' even though Mars and Europa potentially have more potential water, it is not surface water like what the Earth has. The Earth has all its water in the right place so it can be used by Earthlings and Earth Animals and Plants for all their needs and for the Alien Flying Saucers to hover over while their advanced technology makes the water boil and break apart into Hydrogen and Oxygen and they draw the Hydrogen into their Hydrogen Fission and Fusion indrafts and refuel their ships for propulsion and after 30 minutes they whiz away at 10,000 miles per hour. Water comprises .02% of the Earths Mass. Mars has 27% of the water that Earth has but 10.7% of Earths Mass and 15.1% of Earths Volume so Mars has 250% of Water compared to its Mass and 178% of Water compared to its Volume as Earth does, only where is it? Mars is like the 'dry house' down the street that all its faucets are rusted solid and won't turn and the water is not accessible. Some of the mountains on Mars are 90% ice water. Underneath the ground on Mars there is permafrost water so that Mars surface liquid water is 0% of its surface compared to Earth surface being 70% liquid water. Earth advertises its water. Mars keeps its water hidden, below the surface, frozen; tied up in hydrated minerals, away from view so that it looks like a 'dry planet' when actually it has more H2O than Earth compared to its Mass and Volume. Water makes up .05% of Mars Mass. Mars has 37.6% Earth Gravity, 71% Earth Density and tremendous amounts of submerged water everywhere, but like the 'dry house' down the street its pipes are severely rusted and they don't turn the water on from the under the ground large and sufficient supply. Mars needs a plumber. Europa is like the weird, Alien looking house further down the street. Europa has .8% Earth Mass, 1.5% Earth Volume with potentially as much as 300% the water of Earth. Europa has 6.1% the Surface Area of Earth. It has an outer layer of water 62 miles deep underneath an ice crust as hard as granite because of very low temperatures. Because of plate tectonics existing between the ice crusts of Europa the liquid Ocean underneath is supplied with more life supporting Oxygen than Earths Surface Oceans. If the proper nutrients are being supplied from the bottom of the Ocean into Europa's tremendously abundant liquid water the chances for very advanced completely Alien multi-cellular life forms evolved to a very advanced degree are Astronomically Possible. Europa needs a whole bunch of plumbers to travel there and look with submersibles underneath the ice crust and possibly see the origins of the Octopus. The plumbers will be able to see Europa's pipes and faucets; its showers, tubs, sinks, toilets, water sprinklers, hoses, and pails.
How much space does the ocean have?
The Earth's oceans contain about 1.3 billion cubic kilometers of space, which is 95 percent of all habitable area on the planet. In addition to covering most of the Earth's surface area, the oceans provide a habitat to somewhere between 700,000 and 1 million species. Many barriers to exploring the oceans still exist, and as many as two-thirds of marine species have yet to be identified. This makes the oceans one of the last remaining unexplored frontiers of science.
How much of the Earth can humans live on?
That means that, overall, humans can only live comfortably on about 9% of the whole planet.
What does the Earth panel look like?
Because most of the earth surface (~71%) is covered by water, and part of the land is covered by clouds, the panel looks like a big ball of water. While in reality Earth is a big ball of stone with a very very thin layer of water on it! See it for yourself:
What elements make up water?
It shows up in clouds of gas and dust peppered throughout the Milky Way. That’s perhaps not surprising because the elements that make up water—hydrogen and oxygen —are among the most common in the universe.
Which planets have hydrospheres?
Other planets and moons in the solar system also have their own hydrospheres. For instance, there’s scientific evidence that Europa, a moon of Jupiter, contains an ocean of liquid water underneath its icy surface.
Why is water important to life?
Water is critical to life as we know it, which is why researchers are studying how water cycles through the hydrosphere and how this precious resource can best be conserved. Viewed from space, our planet resembles a blue marble. That’s because the ocean covers 71 percent of Earth’s surface.
What is the role of the ocean in the water cycle?
The ocean is accordingly a major component of the hydrosphere, and it plays an important role in Earth’s water cycle. Over 96 percent of Earth’s water is in the ocean. As water evaporates from the ocean, it is transported into the atmosphere, where it falls back to Earth as rainfall.
What happens when water falls over land?
The water that falls over land in the form of rain and snow has many fates: Some is absorbed into the ground and taken up by plants, like trees, and some flows into streams and rivers that eventually empty back into the ocean.
Is Europa's water frozen?
And recent observations have suggested that some of Europa’s subsurface water might be jetting into the moon’s thin atmosphere. Water has also been spotted in frozen form on Mars and Earth’s moon. Astronomers peering farther into space have also found evidence of water.
Is the Earth a water world?
Earth is rightfully called a water-world: far more than half of our planet is covered in water. There’s also water underground, in rivers, and in the atmosphere. Collectively, all of this water forms Earth’s hydrosphere. Water is critical to life as we know it, which is why researchers are studying how water cycles through ...
Why Is Earth A Watery Planet?
Water Movement on Earth
- The water cycle is responsible for the movement of water from one point on earth to the other. Water movement is also caused by the tectonic plates which cause volcanic and metamorphic activity. These plates are associated with the formation of the earth’s seven continents: Asia, Europe, Oceania, South America, North America, Africa, and Antarctica. In addition, volcanic erup…
Significance of Water
- Water’s sole significance on earth is to support life as it sustains the lives of both humans and other living things existing on earth. Human beings utilize water for various purposes such as cooking, washing, recreation, farming, drinking, and sports. As a result, humans consume billions of gallons of water daily. Besides water being an essential component in their environment, hum…
Sources of Earth’s Water Supply
- Almost all water on earth is contained with the world's oceans, five interconnected oceans. Other bodies of water include rivers or lakes, springs, rocks, and rock holes, excavated dams, wells, and aquifers. Aquifersare freshwater reserves found underground.
The Sustainability of Water in The Future
- Globalization and global warming have greatly affected the usage and availability of water on earth. Since globalizationhas led to increased farming, to feed the increased earth’s population more water is required for human existence. Besides, the lifestyle of the 21st-century people demands more water than was needed in the past. Statistics indicate that some cities have to p…