How do volcano erupt?


Volcanoes are formed when there is a great stress inside the earth’s crust and the pressure of magma reaches so high that it finds its way upward causing an eruption. Sometimes the magma chamber breaks its sides and only reaches to the flank or summit of volcano and sometimes reaches to the surface causing an eruption. In the volcanoes which are not much active supply the magma from the deeper parts of the earth is not sufficient to cause eruption so most of the times crystals forms and they go down at the bottom releasing gas in the form of bubbles which come to the top of chamber and sometimes the pressure created by these gas bubbles are enough to erupt a volcano or just wait there for a little more push which they get from the next new magma formed within the earth. The heat just triggers the magma for eruption which was there for a long time.

Magma is the melted rocks deep in the earth crust. The rocks melt because of great heat inside and forms a thick liquid called magma and when it comes to the surface it is called as “lava” and flows into the air in the form of ashes etc.

If the volcanic eruption is explosive then the matter forms a cloud of hot tephron. The things coming in its way are almost destroyed. Ashes which are released in the sky fell on the earth in the form of powdery snow and it doesn’t melts. A huge mass of snow can cause harm to the vegetation, living organism and human beings.

The intensity of explosion depends upon the thickness of magma. The gases cannot escape easily. Hence they are accumulates inside till they get enough heat energy for the explosion.

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33 COMMENTS

    wowz this website was awesome. helped meh so muches when i needed to do a school assignement. Love love love it! IT was ahhhhmazing. i wonder how you got this info, must have went into a real volcano! I always have wanted too so maybe ill take your lead and go into one!:)

    Love, Kitten xoxo

    I think that a volcano can errupt by the way it has enough energy to build up a bigger volcano that will errupt faster as the magma rises on top of the the volcano.

    Why is that when the volcanoes erupt all of that red stuff comes out .And why do people that see were volcanoes move their by them. Is that just dumb or what. So can you answer my question. And would it be good if i do a science fair project it wii be how does volcanoes erupt and why do they erupt. And thats all i wanted to ask you is why do the volcanoes erupt and this is by;” Brianna Marie Thomas.

    This site is great as for me a ten year old child we have got to search how Volcanoes Erupt and i just opened my laptop to see and here comes this site i just hope my teacher likes it.

    But i was just asking if you could put more information , but rather than that its adorable!!

    good, informative, but with a few grammar mistakes. i edited it for a school project, its not brilliant, but at least theres correct grammar;

    Volcanoes are formed when there is great stress inside the earth’s crust and the pressure of magma reaches a critical point where it finds its way upwards, causing an eruption. Sometimes the magma chamber breaks its sides and the magma only reaches the flank or summit of the volcano and sometimes reaches the surface causing an eruption. In the volcanoes which are not as active the supply of magma comes from deeper parts of the earth. It is not usually sufficient enough to cause an eruption, so most of the times crystals form and go down to the bottom, releasing gas in the form of bubbles which come to the top of chamber and sometimes the pressure created by these gas bubbles are enough to erupt a volcano or just wait there for a little more push which they get from the next new magma formed within the earth. The heat just triggers the magma for eruption which was there for a long time.

    Magma is the melted rocks deep in the earth crust. The rocks melt because of great heat inside and form a thick liquid called magma. When it comes to the surface it is called lava and flows into the air in the form of ash, dust, rocks et cetera.

    If the volcanic eruption is explosive then the matter forms a cloud of hot tephron. Anything in its way is destroyed. Ashes which are released in the sky fall on the earth in the form of “powdery snow” which doesn’t melt. A huge mass of this “snow” can cause harm to the vegetation, living organism and human beings.

    The intensity of explosion depends upon the thickness of magma. The gases cannot escape easily, so they accumulate inside until they get enough heat and energy for the explosion.

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