Volcanoes are an opening in the crust of the earth through which molten lava, various gases and ash are released. Volcanoes also refer to the conical mountainous structures created by the materials released from a volcanic eruption. If the pressure of the molten rock and matter beneath the earth's surface becomes excessively great, the rocks followed by gases or lava break free through an opening in the crust of the earth resulting in a volcanic eruption.
The term 'volcano' is known to have originated from 'Vulcano,' a volcanic island in the Aeolian Island, Italy. In fact, about 82 percent of the earth's surface is created from volcanoes. The gases which are released from volcanoes have formed the atmosphere of the earth. Depending upon the intensity and difference in the duration in which they erupt, volcanoes are classified as active, dormant and extinct. There are as many as 500 active volcanoes in the world, with Mauna Loa in Hawaii being the largest active volcano ever (56,000 ft).
The Earth is made of plates and these plates move and collide with each other in the process of making land and doing what the Earth does as it is in essence alive. Where the plates contact an opposing plate, this collision point forces the stronger plate over the weaker plate. This process in known as plate tectonic. Where this collision happens one plate is forced over the other plate. For instance the Pacific Plate and the North American Plate is represented by the Western Coast of the Continent America. This is why there are so many mountains and earthquakes in this region as it is relatively young in the overall age of the earth. The collision and forcing of the plates above and below each other not only creates mountains but enormous pressures and heat. This pressure and heat, evidenced by magma, needs a release as it is like a pot of boiling water. The pressure finds it way into the mountains and creates volcano's. When the pressure builds to a point that it can no longer be retained there is an eruption, like Mt. Saint Helen's. This eruption release the built-up pressures and heat in sometimes cataclysmic eruptions which can devastate great areas on the surface. There are even super volcano's, which would be represented by Yellow Stone Park. This again is an offset of the Pacific and North American Plates this is why there are Hot Springs and the different natural outflows Yellow Stone is know and famous. These Super Volcano's have been documented but never witnessed as they pretty much wipe-out all life when they erupt which Yellow Stone is supposedly brewing in the near future. There will be dikes that lead up to a Volcano which are basically areas that collect additional magma and heat energy that help in reducing the volcano's ability to erupt.
They are like the earths pimples in the center of the earth is hot magma and when the pressure builds the earth starts to form a place to release
A rip in the earths crust witch allows molten rock ash and gasses to come out. Formed by other volcanoes erupting
A volcano is an opening, or rupture, in a planet's surface (crust), which allows hot: Magma, ash, and gases to escape from below the surface.
Volcanoes are large landmasses that have an opening at the top in which lava pours out of the top when a volcanic eruption occurs.
Volcanoes are mountains.volcanoes have hot lava come out of them that is magma when it is in the ground.
Volcanoes are basically mountains. Unlike most mountains, volcanoes have vents that let the lava go through when the pressure builds up.
Volcanoes are pressure valves that releases energy deep within the Earth when magma pushes through the weak spots of the Earth.
Magma comes out of holes in the earth (usually under seas) and cools. Then magma again seeps through the top of the cooled magma. This process repeats itself over and over again, which makes the volcanoes larger. This was how the Hawaiian Island were formed.
A volcano is a opening or rupture in the earth's surface which allows magma,ashes and hot gases to escape from the earth's interior
Simply put, Volcanoes are formed because earth and all other planets are hot inside. Some scientists believe that volcanoes are a natural way to cool off for earth. Many feet under the crust on the earth, there is a semi-liquid hot rock fluid. Pieces of rocks under the surface break off and fall into this semi liquid fluid which forms a gas. This gas builds up the pressure and makes the magma rise to about two miles under the earth's surface. This hot magma puts pressure on the earth crust and as it finds a weak spot or crevice, it breaks out and the magma starts flowing out. Repeated flow of magma results is the formation of a volcano. A volcano might take thousands of years to form.
Volcanoes r like a Mountain
They r cool things that lava comes out of and r awesome o yeah!!!!
Volcanoes have lava come out of it
Volcanoes are found all around the world
Volcanoes are mountains that explode
1. A vent in the earth's crust through which molten rock, ashes, etc. Are ejected.
2. A cone-shaped mountain of this material built up around the vent.
Volcanoes are actually formed by the tectonic plates, because when the two tectonic plates diverge which is meet together it formed a volcano. Sometimes a tectonic plate goes under the other plate. The plate is actually called boundaries.
They are formed by magma being released by the earths core, and when the pressure becomes to great it then explodes in a burst of magma and carnage!
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Volcanoes are like mountians, but with a hole in the top lets lava and ash come out.
A volcano is a vent to the earths underground lava core. When the pressures build up, at some point the volcano vents this pressure.
This is called eruption.