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1. Destructive plate boundaries. The oceanic crust is heavy and the continental crust is not heavy so sometines the oceanic crust sinks to the mantle and the magma chamber beneath.
2. This procedure has created extra lava in the mantle. This magma (lava) must come out somewhere this is where volcano's come into it.
3. After a while too much magma builds up this causes volcanic eruptions.
4. You will hear grumbling and ash will be released before an eruption.
5. During the eruption lava will shoot out of the volcano and volcanic rock. Pyroclastic clouds may come out of a violent volcano.
6. Steam gas and dust are dispersed out of the volcano lava will run down the sides. The thickness of the lava changes the shape of it, runny lava will make a flat volcano and thick lava will make your typical cone shaped volcano.
Sorry there are only 6 steps here :)
There are 3 different types of volcanoes:
-Dormant = Has not erupted for a very long time-sleeping volcano
-Active = Erupting all the time
-Extinct = Will never erupt again.
Hope this helps!:)x
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