A village Destroyed After a Pyroclastic FlowVolcanoes are thought to have direct dramatic effects on the lives of the people and their properties since hot lava flows tends to distroy everything in its path. Moreover, when lava takes the form of ash, its effects can be even more destructive as it can collapse buildings, blocks roads, and even cause lung disease. Pyroclastic flows, which represent the ash rushing down the side of the volcano, is very high in temperature, and is thus very dangerous. Thus, big eruptions require that people evacuate their towns, and to a certain point, even their cities, in order to survive.
Questions:
1- List the three types of Pyroclastic flow.
2- What can be the effects of pyroclasic ash?
3- In relying on the above information, what would you conclude to be the differences between lava and pyroclastic ash?
Questions:
1- List the three types of Pyroclastic flow.
2- What can be the effects of pyroclasic ash?
3- In relying on the above information, what would you conclude to be the differences between lava and pyroclastic ash?
References:
- Grotzinger, J., & Jordan, T. (2010). Volcanoes. In W.H. Freeman and Company.
- Weston, M. (n.d.). Volcanoes. Retrieved from www.volcanoes.com
- Dr. Camp, V. (n.d.). How volcanoes work. Retrieved from http://www.geology.sdsu.edu/how_volcanoes_work/Home.html
1) Ignimbrite is a type of pyroclastic flow which usually contains material that are pitted with many cavities. Nuess Ardentes, the second flow contains denser material (less pits).
ReplyDelete2) Some of the effects of pyroclastic flow are the destruction of manmade structures such as buildings, it destroys plants and vegetation, and harms human skin.
3) Lava is the hot melted rock or magma that erupts out of the vent and reaches the Earth’s surface. On the other hand, pyroclastic ash is not the liquid form of rocks but is the dry form, known as ash and is also very hot.
1. The three types are: superheated gas, rock (collectively known as tephra), and ash.
ReplyDelete2. The effects are represented by collapse buildings, blocks roads, and even cause lung disease.
3. Pyroclastic ash seem to be less dangerous since it causes lung diseases but does not kill man, as opposed to lava.