According to the stories of astronauts, there is no more beautiful and bewitching picture than the view of the Earth from space. When you look at a small ball consisting of white clouds, brown earth and blue water, it is impossible to take your eyes off...
Today we will look at several cool online 3D Earth globes, which you can use directly from this page. They are all interactive and you can interact with them. There is no need to download and install additional programs like Google Earth, etc. - just open this page in your browser and enjoy.
Photorealistic 3D Earth globe
This is a three-dimensional model of the world, on which photo textures obtained by NASSA satellites are stretched.
You can spin the ball in different directions by holding down the left mouse button. Rotating the mouse wheel up increases the viewing scale, downwards - on the contrary, decreases it.
At maximum zoom, the textures become blurry, so I recommend that you do not get too carried away with scaling.
Blurring is due to the fact that the model uses low-resolution photographs. Otherwise, loading them in the browser would take too long.
This 3D globe allows you to see our planet almost the way astronauts see it. Well, or close to it :)
Virtual globe of the Earth
This is a three-dimensional interactive virtual globe on which the borders of states, names of cities, regions, settlements, etc. are indicated.This 3D model of the world does not have raster textures, like the previous one, but vector ones, so here scaling can be done down to individual buildings. At maximum magnification there are even house numbers and street names.
Historical globe
It demonstrates how our ancestors saw our Earth at the end of the 18th century. Its authorship belongs to the famous geographer and cartographer Giovanni Maria Cassini, and it was published in Rome in 1790.
It is also fully interactive, you can twist, rotate, zoom in or out of the map. Looking at it, you understand how much the world has changed in just 200 years, and how many events were behind it all...
And here is the actual globe itself (1790), from which this online 3d model was made:
Finally amazing beautiful video about what the Earth actually looks like from space:
Friends, share your impressions, opinions and ask questions in the comments!
The liquid state of water is maintained on Earth due to a combination of many factors: the size of the planet, which creates the necessary force of attraction that holds the atmosphere; the distance to the Sun, which is why the planet maintains the required temperature; the amount of atmosphere held by gravity and creating the required pressure at the surface; the rotation of the Earth around its axis, due to which the circulation of atmospheric flows occurs. Without them, there would be no water on earth. Based on these factors, the rest follow, which contribute to the maintenance of life.The main use of water by living organisms is only one thing - to maintain the functioning of living cells that make up the tissues that make up these organisms, including humans. Animals and humans also use water for other needs. Maintaining cleanliness, cooling the body from elevated ambient temperatures, for digestion of food, and as a universal diluent.
Life without water
The existence of a world without water on earth is more or less exemplified by life in deserts. The scorching sun and dry air force all living things to take refuge somewhere by any means. Reptiles burrow under the surface of the earth, look for all sorts of shady places, and change their appearance, helping them retain moisture. Plants lengthen their roots, going deep into the cooler bottom, towards the water, the leaves are replaced with thorns for less moisture consumption.People living in desert conditions are also protected from excess water consumption. They know the sources and the distances between them in order to calculate the water consumption when moving and then replenish it in time. Bedouins, who completely wrap their bodies in black cloth, thus maintain the right amount of body moisture, which ensures the right temperature. Their measured, unhurried movements do not cause unnecessary waste of energy, which also requires water to restore.
And if we talk about human use of water in industry, then it is obvious that without it no development of civilization would have occurred. And in the future, if for some reason there is less water on earth (not to mention it), the difficulties of mankind will be inevitable.
In the distant future, the Earth will find itself without the conditions that support the existence of water. And then the planet will turn into an inanimate, cold stone world, monotonously flying into the eternal distances of space.
In the last few days, a strange animated graphic has been circulating around the Internet depicting a crooked, compressed Earth, supposedly what it would look like “without water.” The problem is that it doesn't. Not this way. No and not like that.
What this animation actually shows is what the geoid is: it's kind of a way to describe the Earth's gravitational field. The graphics were created by Ales Bezdek in MATLAB. This is how he describes all these bumps and irregularities:
“Earth's gravity is not smooth on the surface, and is stronger in some places than others. This is because the Earth is not an ideal homogeneous sphere (that is, the density of its interior is not uniform), but has places that are more and less dense. This affects surface gravity."
When you stand on the surface of the Earth, gravity seems to pull you toward the center. But if you stand near a denser region, gravity will pull you a little to the side, further from the center. The viral geoid on the graph shows exactly this picture: on this map, gravity will always pull you perpendicular to the surface depicted.
It sounds strange, but it's true: if you are on the edge of the "hill" depicted on the geoid, you will not be pulled directly towards the center of the Earth, but perpendicular to the surface on which you are standing. The graph is heavily distorted to show the Earth's uneven gravitational field.
What’s especially funny about pseudoscience is that it’s usually something that goes viral that is completely the opposite of the truth. How does this happen?
Another way to describe the geoid is to characterize it as the shape of a perfectly fluid object; that is, if its surface can flow freely.
For a perfectly homogeneous object (say, a large, non-rotating drop of water in space), the geoid will be a sphere. For the Earth it will be what is shown in the image. In other words, this graph does not show the Earth without water, it shows what shape the Earth would have if its surface was entirely covered with water. It's quite the opposite.
It is quite easy to come to the conclusion that this is what the solid surface of the Earth under the oceans looks like. Take a look at the scale on the graph; it shows differences from +80 to -80 meters. But this is a tiny fraction of the size of the Earth. In physical reality, even if the Earth were covered in water, it would not be nearly as hunchbacked as shown. Again, exaggeration was made for clarity.
Think about this: the deepest place in the earth's oceans (the Mariana Trench) is 10 kilometers deep. The Earth is approximately 13,000 kilometers across. Remove all the water from the Earth's surface and you would hardly notice the change: the difference between the highest mountain and the lowest point of the ocean would be less than 20 kilometers, one tenth of one percent of the Earth's diameter.
This is what Earth would look like without water.
You will get such a spherical drop if you drain all the oceans of the Earth (along with atmospheric vapor, lakes, polar caps, and so on). Not much compared to the rest of the planet, right? A smaller drop is fresh water on the ground, in lakes and rivers; the smallest is fresh water from lakes and rivers.
Check the facts. Trust reliable resources like Hi-News.ru. However, even scientific sites sometimes make mistakes.
Covers approximately 360,000,000 km² and is generally divided into several major oceans and smaller seas, with oceans covering approximately 71% of the Earth's surface and 90% of the Earth's biosphere.
They contain 97% of the Earth's water, and oceanographers claim that only 5% of the ocean depths have been explored.
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Because the world's oceans are a major component of Earth's hydrosphere, they are integral to life, form part of the carbon cycle, and influence climate and weather patterns. It is also home to 230,000 known animal species, but since most are unexplored, the number of underwater species is likely much higher, perhaps more than two million.
The origin of the oceans on Earth is still unknown.
How many oceans are there on earth: 5 or 4
How many oceans are there in the world? For many years, only 4 were officially recognized, and then in the spring of 2000, the International Hydrographic Organization established the Southern Ocean and defined its limits.
It’s interesting to know: what continents exist on planet Earth?
Oceans (from the ancient Greek Ὠκεανός, Okeanos) make up most of the planet's hydrosphere. In descending order by area, there are:
- Quiet.
- Atlantic.
- Indian.
- Southern (Antarctic).
- Arctic Oceans (Arctic).
Earth's global ocean
Although several separate oceans are usually described, the global, interconnected body of salt water is sometimes called the World Ocean. TO continuous pond concept with relatively free exchange between its parts is of fundamental importance for oceanography.
The major oceanic spaces, listed below in descending order of area and volume, are defined in part by continents, various archipelagos, and other criteria.
What oceans exist, their location
Quiet, the largest, extends north from the Southern Ocean to the Northern Ocean. It spans the gap between Australia, Asia and the Americas and meets the Atlantic south of South America at Cape Horn.
The Atlantic, the second largest, extends from the Southern Ocean between America, Africa and Europe to the Arctic. It meets the Indian Ocean waters south of Africa at Cape Agulhas.
The Indian, the third largest, extends north from the Southern Ocean to India, between Africa and Australia. It flows into the Pacific expanses in the east, near Australia.
The Arctic Ocean is the smallest of the five. It joins the Atlantic near Greenland and Iceland and the Pacific Ocean in the Bering Strait and overlaps the North Pole, touching North America in the Western Hemisphere, Scandinavia and Siberia in the Eastern Hemisphere. Almost all covered sea ice, the area of which varies depending on the season.
Southern - surrounds Antarctica, where the Antarctic circumpolar current prevails. This sea area has only recently been identified as a separate oceanic unit, which lies south of sixty degrees south latitude and is partially covered by sea ice, the extent of which varies with the seasons.
They are bordered by small adjacent bodies of water such as seas, bays and straits.
Physical properties
The total mass of the hydrosphere is about 1.4 quintillion metric tons, which is about 0.023% of the Earth's total mass. Less than 3% is fresh water; the rest is salt water. The ocean area is about 361.9 million square kilometers and covers about 70.9% of the Earth's surface, and the volume of water is about 1.335 billion cubic kilometers. The average depth is about 3688 meters, and maximum depth is 10,994 meters in the Mariana Trench. Almost half of the world's sea waters have a depth of more than 3 thousand meters. Vast areas below 200 meters depth cover about 66% of the Earth's surface.
The bluish color of the water is a component of several contributing agents. Among them - dissolved organic matter and chlorophyll. Sailors and other sailors have reported that ocean waters often emit a visible glow that extends for many miles at night.
Oceanic zones
Oceanographers divide the ocean into different vertical zones determined by physical and biological conditions. Pelagic zone includes all zones and can be divided into other areas, divided by depth and illumination.
The photic zone includes surfaces up to a depth of 200 m; it is an area where photosynthesis occurs and therefore has great biological diversity.
Because plants require photosynthesis, life found deeper than the photonic zone must either rely on material falling from above or find another source of energy. Hydrothermal vents are the main source of energy in the so-called aphotic zone (depths greater than 200 m). The pelagic part of the photonic zone is known as epipelagic.
Climate
Cold deep water rises and warms in the equatorial zone, while thermal water sinks and cools near Greenland in the North Atlantic and near Antarctica in the South Atlantic.
Ocean currents greatly influence the Earth's climate by transporting heat from the tropics to the polar regions. By transferring warm or cold air and precipitation to coastal areas, winds can carry them inland.
Conclusion
Many of the world's goods move by ship between the world's seaports. Ocean waters are also the main source of raw materials for the fishing industry.
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How much do you know about our planet? Have you heard that sometimes time on Earth speeds up, and a second Sun burns inside it?
Editorial website I combed through the latest science magazines and collected a selection of the most incredible facts about our planet. Get ready, we will break stereotypes!
It's not just the sun that warms us
For so many years we believed that our main source of heat was the Sun. As soon as it goes out, all living things will die, and humanity will disappear forever from the face of the Earth.
But it turns out that the temperature of the Earth's core is the same as the surface of the Sun. This is 5,500 °C, but there is a problem: the core is 3,000 km away. People have so far only been able to dig 18 km deep.
Earthquakes speed up time
All our lives we have been told that there are 24 hours in a day. After all, this is exactly what the Earth needs to complete a full rotation around its axis. But the planet manages to make this revolution faster. The actual length of a day is 23 hours 56 minutes 4 seconds.
The rotation speed is influenced by various factors. For example, in 2011, after an earthquake in Japan, the Earth began to rotate faster, and the days became 2 seconds shorter. By 2015, the rotation speed was back to normal.
Dinosaurs trampled a completely different Earth
The land on which dinosaurs walked is different from the one we trample on today. You've probably heard that after a volcanic eruption, lava cools, forming islands and land. And this is the first step towards renewing the Earth. Magma rises from the depths of the earth to the surface, then cools, forming volcanic rocks.
Is the Earth really round?
The planet is flattened at the poles, and there is a huge bulge at the equator between Asia and Australia. So technically the Earth is still round, but it doesn't look like a ball at all. More like a huge potato.
People are not the owners of the Earth
By 2017, the population exceeded 7.4 billion people. But the truth is that there are more microorganisms in one teaspoon of earth than there are people on the entire globe.
How many bacteria live in water? They can be considered the rulers of the Earth. According to rough calculations by scientists, 1,000,000,000,000,000,000,000,000,000,000 microbes live next to us.
What's wrong with space debris?
Throughout his existence, man has gone on space travel more than 135 times. And we learned about space debris in orbit: the remains of asteroids, parts of rockets and more than 2,000 satellites that move at a speed of 35 thousand km/h.
Remember the movie "Gravity"? Space debris is a serious danger for crews of orbital stations operating in outer space.
Where does all this air come from?
The Amazon rainforest covers only 5.5 million square meters. km. This is where 20% of the oxygen we breathe is formed. Rest rainforests much smaller and found in Central America, Africa, South Asia and Australia. Their total area is equal to the area of the Amazon forest.
But the value of forests is not that they produce oxygen. They ensure its constant circulation in nature thanks to microorganisms, plants and trees. Every year, forest areas are rapidly decreasing. The reasons for this are global warming and large-scale deforestation.
Gravity on Earth can change
Contrary to what we learned in physics lessons, the force of gravity on the planet is not the same everywhere. If you, while walking along the equator, are instantly transported to one of the poles, your weight will sharply increase by 0.5%. In some places on Earth, such as the Hudson Bay area, gravity is less than normal.
Such anomalies are due to the thin earth's crust, the influence of glaciers and magma movements.
Southern Lights
As you remember, the surface of our planet is as much as 70% covered with water. It may seem that if all the water were removed, the Earth would become like dried grapes. However, this is not quite true.
Aligning the highest mountains with the deepest sea depressions, you can see that the Earth is covered with a very thin layer of water. And if all the water on Earth is collected into one large ball, then the radius of this ball will be only 700 kilometers. This is even less than the radius of the moon.
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