How are the formation of Volcanoes, Earthquakes and Mountains connected? AND Why
ID: 291261 • Letter: H
Question
How are the formation of Volcanoes, Earthquakes and Mountains connected? AND Why are these features relatively unique to Earth compared to other planets in the Solar System? All three are formed from the fact that the Earth has earthquakes. Earthquakes are the primary cause tectonic motions on the Earth's surface, which drives the formation of volcanoes and mountains Our Earth is unique because most other planets do not have earthquakes. Without earthquakes, plate tectonics will not occur and the surface of the Earth would be stationary: no volcanoes and no mountain building. (NOTE: lo, the moon of Jupiter is an exception, it has active volcanism due to the gravitational tug of its host Planet Jupiter) e Earth'sc formation or occurrence of these features and the plate tectonics occurs from the fact that our Mantle is molten Our Earth is unique because most other planets have cores that are "cold" and not molten. Without the fluid material under the crust, plate tectonics will not occur and the surface of the Earth would be stationary: no earthquakes, no volcanoes and no mountain building. (NOTE: lo, the moon of Jupiter is an exception, it has active volcanism due to the gravitational tug of its host Planet Jupiter) All three are formed from the fact that our Mantle is rocky under the Earth's crust. The rocky core of the Earth causes earthquakes, volcanoes and mountains to form Our Earth is unique because most other planets have cores that are molten and not rocky. Without the rokcy material under the crust, the surface of the Earth would be stationary: no earthquakes, no volcanoes and no mountain building. (NOTE: lo, the moon of Jupiter is an exception, it has active volcanism due to the gravitational tug of its host Planet Jupiter) All three are formed from the fact that our crust is molten and fluid. Plate Tectonics is what drives the formation or occurrence of these features and the plate tectonics occurs from the fact that our crust is molten Our Earth is NOT unique, all planets in our Solar System have very active earthquakes, volcanoes and mountain formation occurringExplanation / Answer
Answer: (b) All three are formed from the fact that our mantle is molten under the Earth's crust. Plate tectonics is what drives the formation or occurrence of these features and the plate tectonics occurs from the fact that our mantle is molten. Our Earth is unique because most other planets have cores that are "cold" and not molten. Without the fluid material under the crust, plate tectonics will not occur and the surface of the Earth would be stationary: no earthquakes, no volcanoes and no mountain building. (NOTE: lo, the moon of Jupiter, is an exception, it has active volcanism due to the gravitational tug of its host planet Jupiter.)
Reason: The Earth's lithosphere is broken down into a number of lithospheric plates which are riding above the low velocity zone or the molten mantle material. This moten mantle material acts as a lubricating medium on which the lithospheric plates move and while moving, when these lithospheric plates collide with one another, it gives rise to earthquakes and/or volcanoes along with the formation of mountains. In the absence of this molten mantle material, the lithospheric plates will not move because there will be no lubrication. So, there will be no collision, no plate tectonics and hence no earthquakes, volcanoes or mountain building activity.
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