This writing will define and discuss the electrical outlethole to stymy: types of volcanoes, relieve oneselfation of a volcano, and elements of a volcano; such as, lava, shudder fragments, and gas. This paper also tells a little bit well-nigh volcanic activity in different parts of the world. What is a volcano?                 A volcano is a vent in the ground from which molten joggle and gas erupt. The molten quiver that erupts from the volcano forms a mound or mountain nigh the vent. The lava may flow out as a cohesive liquid or it may explode from the vent as solid or liquid particles. Kinds of Volcanic Materials         trey underlying materials that may erupt from a volcano ar; 1. lava, 2. rock fragments, and 3. gas.         Lava                 Lava is the name for magma that has been released onto the Earths surface. When lava comes to the Earths surface, it is red hot and may have temperatures of overmuch than 2012 degrees Fahrenheit. Fluid lava flows swiftly down a volcanos slopes. Sticky lava flows more(prenominal) slowly. As the lava cools, it may harden into many different formations. super unstable lava hardens into smooth, folded sheets of rock called pahoehoe. Stickier lava cools into rough, jagged sheets of rock called aa.
Pahoehoe and aa cover liberal areas of Hawaii, where the terms originated. The stickiest lava forms flows of b oulders and rubble called block flows. It ma! y also form mounds of lava called domes. Â Â Â Â Â Â Â Â Other lava formations are spatter cones and lava tubes. sputtering cones are eat up hills that can get up to one hundred feet high. They manikin up from the spatter of geyser-like eruptions of thick lava. Lava tubes are tunnels formed from liquid lava. As the lava flows, its exterior covering cools and hardens. But the lava below continues to... If you compulsion to get a full essay, order it on our website:
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