How and when the volcanoes are formed?
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Deep inside the earth, between the molten iron core and thin crust at the surface, there is a solid body of rocks called mantle. when rocks of mantle melt, move to the surface through the crust, releases pent-up gases and volcano erupts...Extremely high temperature and pressure cause the rock to melt and become a liquid rock or we can say its magma. when a large body of magma has formed it rises through the denser rock layer towards earth surface. magma that has reached the surface is called lava.
The primary ingredient for the formation of volcanoes is the mantle which is made up of molten materials and gases commonly referred to as magma. When intense pressure develops within the mantle, particularly along fault lines, a volcanic eruption is very likely to occur. Fault lines are the weak areas, cracks, or openings in the earth’s crust. In the eruption process, the molten material turns into lava when it gushes out through the openings onto the earth’s surface.
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The primary ingredient for the formation of volcanoes is the mantle which is made up of molten materials and gases commonly referred to as magma. When intense pressure develops within the mantle, particularly along fault lines, a volcanic eruption is very likely to occur. Fault lines are the weak areas, cracks, or openings in the earth’s crust. In the eruption process, the molten material turns into lava when it gushes out through the openings onto the earth’s surface.
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HOW ARE VOLCANOES FORMED?
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcanocontinues to erupt, it will get bigger and bigger.
WHEN ARE THE VOLCANOES FORMED?
1. A decrease in pressure– lowers melting temperature and allows solid rock to melt
-Occurs at divergent boundaries.
2. An increase in temperature– melts rock
-Occurs at a hot spot.
Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcanocontinues to erupt, it will get bigger and bigger.
WHEN ARE THE VOLCANOES FORMED?
1. A decrease in pressure– lowers melting temperature and allows solid rock to melt
-Occurs at divergent boundaries.
2. An increase in temperature– melts rock
-Occurs at a hot spot.
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