CE8392 EG 2marks
Anna University Regulation 2017 CIVIL CE8392 EG 2marks & 16marks for all 5 units are provided below. CE8392 EG Short answers, Question Bank for ENGINEERING GEOLOGY Engineering are listed down for students to make perfect utilization and score maximum marks with our study materials.
1) Write notes on Lithosphere.
Litho is a Greek word, which means stone. Accordingly the lithosphere is the part of the earth, which is solid crust. The thickness of lithosphere is approximately 50 km. The crust thickness is not the some at all places. It is thicker in the continent and thinner on the ocean floors. Lithosphere is a source of various minerals. It contains variety of landforms such as mountains.plateous valleys, plains.
2) What is meant by NIFE?
The central part of the earth is called Core or barysphere. It has thickness of 2900km.This layer is made of very hard mineral like Nickel (Ni) and iron (Fe) and so it is called NIFE (Ni + Fe). Here there is intense heat and pressure and this region is elastic and viscous in nature.
3) Distinguish between SIAL and SIMA.
The upper most layers is called the crust of the earth. It has a thickness of 50 km and thus the crust is made of two layers. Silica (si) and Aluminium (Al) are the elements found in the first layer. Therefore this layer is called SIAL (Si + Al). This layer is also called ‘Granitic layer.’Below the SIAL ties a layer called SIMA which composes of silica (Si) and Magnesium (Mg). This layer is also called Basaltic layer.
4) What are plates?
The surface of the earth is the crust of the earth. It is made of interlocking pieces called plates. The continents and oceans rest in these places and are separated by wide cracks. The plates move constantly.
5) What is meant by atmosphere?
The outer gaseous part of the earth starting from the surface and extending as far as 700 km and even beyond is termed atmosphere. It makes only about one-million part of the total mass of the earth.
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