Hello friends, in this article we are going to see complete information about volcanoes, because volcano is mainly a place in the ground, from where the molten rock, called magma, which forms the surface of the earth. Located just below, it ejects. When magma reaches the ground, it is called lava. Lava is scattered to form a cone near and around the mouth of a volcano.
(What is a volcano?)
Volcano is the eruption of molten material, gas or steam, ash etc. inside the earth. A natural hole or crack in the exposed shell. The molten material inside the earth that emanates from volcanoes is called igneous or lava. It is very hot and red in colour. The lava solidifies and turns black, which is then known as volcanic rock. lava contains a lot of gas
that she can only go out once. Bubbles in lava are formed due to the release of these gases. When the lava stops flowing, steam appears for some time. These gases are useful in lifting molten rock, but require that there is a weak layer somewhere in the crust, which helps the lava move upward by breaking, tearing, or piercing the gas. (Volcano information in English) It is natural for a volcano to erupt.
(What is lava?)
Lava is that part of a volcano from which rocks and magma also heat up and melt. It occurs when a volcano erupts and forms new rock, and many more volcanoes are produced around it.
(When does the lava come out?)
At the base of the volcano is a lake made of lava. It is formed when energy builds up on Earth. Then lava is formed. It has no time limit. Sometimes it explodes due to excess energy.
(history of volcanoes)
The people of Italy had heard that their country's Mount Vesuvius had erupted in some places from where the fire started. People were scared to hear such a thing, but they had no idea that he would set fire again. Because thousands of years had passed since that event and due to sun, frost, wind, rain etc., his burnt face and mountain slopes were covered with green colour. His wounds healed. The earth was smiling all around and new cities were settled. On its basis, historical libraries such as the Pampia and Herculaneum are developing.
Then an incident happened. The event should be called an accident. On the afternoon of 24 August 79A, white smoke began to rise from the mouth of Vesuvius. The earth trembled and roared loudly. The people of the city felt that the end of the people of the world was near. Ashes, dust and stones began to rain, the sky was filled with dark clouds, there was thick darkness all around.
Soon the buildings of the cities collapsed. There was fire everywhere. many people died. Hardly 10/10 people (about two thousand) could survive in Pampai. This covered the cities like mud coming from the mountains. Both cities were completely destroyed.
After hundreds of years, the people of the country also forgot where these cities are. Such incidents have happened in different parts of the earth and will continue to happen in future also. (Volcano information in English) We call these volcanoes or volcanic eruptions.
(How does a volcano erupt?)
They only erupt where the shell is weak, where they find a way out." We can't penetrate the Earth's crust, but we can infer What are the conditions that can happen there. So far we have been able to reach one room.
Four miles and we find that the temperature increases with depth. For this reason we have to air-condition the deepest mines. Seeing rising temperatures, people recently assumed that the Earth's interior could not contain condensate, the rocks there. Scientists have concluded that the earth's crust is not in a liquid state until a depth of 1800 miles, not in the solid state but in the liquid state, but by studying the waves of earthquakes with the help of seismographs.
The truth is that there is no place for even those rocks to melt. They weigh more on earth. Rocks tend to expand as they melt, and the relatively cold layers above compress them so hard that they do not expand, so they are unable to melt the mantle once it is hot enough to melt.
But lava is molten rock from the Earth's interior. Where and how does it come from? It is possible that due to some reasons the pressure of the earth's crust has decreased. The crust may have been pulled up and lifted as the Earth gradually cooled, shrunk and wrinkled.
This, in turn, would reduce the pressure and give the rock below (50-60 miles below) a place to expand and liquefy. It is also possible that the rocks were specially heated at certain places of the crust.
A few years ago we found radio-active elements in rocks. These elements break down and turn into other substances. This change produces heat. (Volcano Info in English) Due to this ever-increasing heat, rocks can become very hot in some places and melt and burst the solid layer above.
(Types of Volcanoes)
There are three types of volcanoes.
shield volcano:
If the mega is too hot and comes out of the ground too fast, it is normal for an explosion to occur. The magma that comes out of it is very large. Due to the extremely smooth flow of lava, it freezes in a certain way at the mouth of the volcano, and its slope decreases as it moves away from the source of the volcano. The temperature of the magma of this type of volcano is between 800 to 1200 degree centigrade.
Combined Volcanoes:
It is also known as 'Strato Volcano'. These are special types of explosive volcanoes. When the temperature of the magma drops slightly, it begins to solidify and diffusion of the gas becomes difficult. As a result, magma from underground comes out with great force and erupts. In this type of volcano, lava flows in a special way, which is called waves. The temperature of these volcanoes is between 800 to 1000 ° C.
Caldera Volcano:
Such a volcano erupts in such a way that most of the lava accumulates at the mouth of the volcano and forms a volcanic basin. The lava of this volcano is very viscous. (Volcano Information in English) Its lava is relatively cold compared to other volcanoes. The temperature of its magma is between 650 to 800 degree centigrade.
(Top 5 Volcanoes in the World)
Some volcanoes are world famous for their size and explosiveness. Below is the list of names and their brief description:
Mount Vesuvius:
This volcano is in Italy. It is a cone-shaped volcano, famous for AD AD eruptions. Millions of people were killed in this explosion. During its eruption, volcanic gas, rock and ash flies 33 km above the ground. It falls into the crater of the Pacific Ocean. It is currently the most dangerous volcano in the world because about three lakh people live around this volcano.
Its height is 1281 meters. Mount Vesuvius finally erupted in March 1944. Many villages in San Sebastian were destroyed in this explosion. It is part of the 'Companion Volcanic Arc', formed by the convergence of the Africa and Eurasia tectonic plates.
Mount Ridge:
In 1985, two explosions occurred in Colombia, South America. After the eruption, water and mud from several small rivers started flowing down its slopes. The mud buried the city for miles, killing more than 25,000 people. It falls into the crater of the Pacific Ocean. There are many active volcanoes on the craters of the Pacific Ocean. Its height is 5,321 meters.
In 2016, Mount Ridge finally erupted. It is the third northernmost volcano in the Northern Volcanic Division of the Andean Volcanic Belt.
Andean Volcanic Belt located on the Nazca Oceanic Plate and on South America Continental Plate. These volcanoes can produce explosives, which can affect glaciers. (Volcano Information in English) It is a type of mixed volcano, which is spread over an area of about 200 km.
Mount Please:
The eruption of Mount Plea is considered the deadliest volcanic eruption of the 20th century. It exploded in 1902. It is in Martinique and Ireland in the Caribbean. 30 thousand people were killed in the explosives of 1902 Its height is 1,397 meters. Its last eruption was in 1932.
It is a mixed volcano in France, composed of pyroclastic rocks. It is located on the northern edge of the island of Marinique on the Lesser Antilles volcanic arc. This arc was formed by the union of the North American Plate and the Caribbean Plate.
Mount Krakatoa:
It is a composite volcano located in Indonesia. Its eruption in 1883 also caused a tsunami and killed about 35,000 people. Its height is 813 meters. No one in modern history has been named for such a strong volcano.
This time its sound lasted for 4800 km from its original place. Mount Krakatoa last erupted on 31 March 2014. The island of Krakatoa is located between Java and Sumatra in the steepest part of the Sunda. It is part of the Indonesian island arc, which rests on the Eurasian and Indo-Australian tectonic plates.
Tambora Mountains:
It is one of Indonesia's '100 plus' volcanoes. The eruption of 1815 had a very bad effect. Its height is 2722 meters. After the eruption of 1851, crop growth in the surrounding area stopped. Climate change was also observed in many places. This year is also known as 'The Year Through Summer'. About 90,000 people were killed in this explosion. Mount Tambora last erupted in 1967. It is an active composite volcano.
some of your questions
What is a Volcano?
A volcano is a hole in the earth's crust through which lava, volcanic ash and gases escape. ... Beneath a volcano, liquid magma containing dissolved gases erupts from cracks in the Earth's crust. As the magma rises, the pressure decreases, allowing the gases to rise.
What are the 3 types of volcanoes?
Different volcanoes vary in volcanic material, and this affects the size, shape, and composition of the volcano. (Volcano information in English) There are three types of volcanoes: cinder cones (also called spatter cones), mixed volcanoes (also called stratovolcanoes) and shield volcanoes.
What causes volcanoes?
Usually a thin, heavy oceanic plate lifts or pushes down a thick continental plate. When enough magma builds up in the magma chamber, it makes its way to the surface and erupts, often causing volcanic eruptions.
What's inside a volcano?
Molten rock collected in the chamber of an active volcano is called magma. Pressure builds up in the magma chamber, causing the magma to move through channels in the rocks and escape to the planet's surface. Once it has flowed to the surface, the magma is known as lava.
What is flowing lava called?
Lava is magma after it has been ejected from the surface of a terrestrial planet (such as Earth) or the Moon. ... Volcanic rock formed by subsequent cooling is often called lava. Lava flow is the ejection of lava during a spontaneous eruption.
What is an extinct volcano?
A volcano that has not erupted in the past 10,000 years is often listed as extinct. An extinct volcano no longer has a supply of lava. An extinct volcano is no longer near an active geological hot spot, if it ever was. (Volcano Info in English) Dormant volcanoes can still erupt, while extinct volcanoes have a one percent chance or not.
What are the effects of volcanoes?
Volcanoes can change the climate. They can be rain, thunder and lightning. Volcanoes can have a long-term effect on climate, causing the world to become cooler. The fast moving lava can kill people and the ash fall can make breathing difficult.
How fast do volcanoes grow?
how long does it take for a volcano to form ?Volcanoes are formed by thousands of eruptions over about 10,000–500,000 years – each lava flow encircling the one before it. In the case of ocean island volcanoes, lava first erupts through cracks or crevices in the deep ocean floor.
How low do volcanoes go?
Computer models show why erupted magma chambers lie six to 10 kilometers underground. A new study reveals why the magma chambers of frequent and recurrent volcanic eruptions remain within a very narrow depth range in the Earth's crust.
Which volcano could destroy the world?
The Yellowstone Supervolcano is a natural disaster we cannot prepare for, it will bring the world to its knees and destroy life as we know it. (Volcano Info in English) Yellowstone Volcano is 2,100,000 years old and has erupted on average every 600,000-700,000 years throughout its lifetime.
Which volcano has erupted recently?
Kilauea's most recent eruption began last December, and officials told locals to stay indoors to avoid exposure to the ash cloud. The volcano continued to eject lava for five months. In 2018, the eruption destroyed more than 700 homes and forced residents to evacuate.
Which country does not have a volcano?
Although there are about 150 volcanoes in Australia, none of them have erupted for about 4,000 to 5,000 years! The lack of volcanic activity is due to the location of the island in relation to a tectonic plate, two layers of the Earth's crust (or lithosphere).
Where is the only surviving volcano in India?
The Andaman and Nicobar Islands are the only active volcano in India and South Asia. Located at the junction of the Indian and Burmese plates, Barren Island is in the middle of the ocean.
In which country is the volcano located?
With more than 13,000 islands, Indonesia leads the world with the most active volcanoes. Volcanoes also cause the most deaths.
Can you see inside the volcano?
It's impossible to know what an active volcano looks like inside as you and you try to get inside it – burning up in seconds, you can plunge 120 meters down into the magma chamber of the dormant Thrihunukagigur volcano in Iceland. Inside the volcano.
what did you see today?
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