Question

Exercises<br />Answer the following questions briefly<br />1. What do you mean by the crust of the Earth?<br />2. Why is the Lithosphere also known as the "Mineral Skin?<br />3. Describe the interior structure of the earth<br />4. What forms the basis of Wegener's Continental Drift Theory?<br />5. Why is the composition of the crustal layer of earth of great interest?<br />6. What is the Mohorovicic Discontinuity?<br />7. State the composition of the Sial layer.<br />8. What does the Sima layer consist of? Where is it located?<br />2. Distinguish between the Sima and Sal layer.<br />10. Which are the two most abundant chemical elements in the Earth's crust?<br />11. Describe the mantle of the Earth.<br />12. State the properties of the core of the Earth<br />​

Answer 1

Answer:

The Earth is composed of four different layers. Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top. Because of this, the crust is made of the lightest materials (rock- basalts and granites) and the core consists of heavy metals (nickel and iron).

The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The Outer and Inner Cores are hotter still with pressures so great that you would be squeezed into a ball smaller than a marble if you were able to go to the center of the Earth!!!!!!

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Answer 2

Answer:

distinguish between sima and sial layer