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.
1 Volcanoes are big holes that let out hot gasses, ash and magma from deep inside the Earth. 2  Many volcanoes are mountains, made up of layers of lava and ash. 3  Many volcanoes have several vents â a main one, and secondary ones that branch off the main vent. The largest active volcano is Mauna Loa. 2  Most volcanoes can be found in countries that have coastlines on the Pacific Ocean â this is called the Ring of Fire. 3  Gas, ash and magma can come out of volcanoes. 4  When magma flows out of a volcano, itâs called lava.