The Technological Advances Of The Earth 's Mantle Essay

1084 Words Sep 18th, 2016 5 Pages
1) Describe the two technological advances that have made it possible to better understand the dynamics of the Earth 's mantle.
Two technological advances that have made it possible for scientists to better understand the dynamics of the Earth’s mantle are seismic snapshots and computer modeling. Seismic snapshots enable scientists to determine the temperature and density of the mantle. When an earthquake occurs vibrations are put into motion which create waves that can be detected by apparatuses, seismic waves. Using the instruments that are set up around the world, Geologists and Geophysics determine the amount of time it takes for the seismic wave to travel from the epicenter of an earthquake to a particular station, enabling them to infer the temperature and density of the rock that the wave traveled through. Using this technique, researches have been able to map out the temperatures and densities of the Earth’s mantle. Furthermore, the creation of computer modeling has greatly enhanced the understanding the mantle by allowing scientists to create simulations of any part of the mantle that they don’t quite understand, helping them infer what is going on in the Earth’s crust. 2) Explain, with reference to superplumes and subducting tectonic slabs, what caused large regions like Colorado and Australia to first sink and then rise again in the geologic past.
For large regions of land to sink there has to be a force pulling the crust of the Earth down. Subducting…

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