What is the function of the peripheral system and its function? peripheral nervous system is all the nerves located outside the  central nervous system; connects the central nervous system to all  the parts of the body. 1 person found this useful.
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 volcano continues to erupt, it will get bigger and bigger.
To understand the activity of volcanoes, you need to first understand the structure of the Earth. A volcano is a mountain from where the molten rocks or magma erupt through the surface. In simple terms, a volcano is an opening in the earthâs surface from which the molten rocks and gases escape out.