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Pressure, Temperature, and Density Variations in the Earth
The Earth’s internal structure is defined by systematic variations in pressure, temperature, and density. These parameters not only describe the ...
Age of the Earth
The Earth is about 4.54 billion years old, formed soon after the birth of the Solar System. This age is ...
Composition of Earth
The Earth is a heterogeneous body where chemical elements are unevenly distributed across its major reservoirs: crust, mantle, core, hydrosphere ...
Internal Structure of the Earth
The Earth, though appearing as a solid sphere, is a highly dynamic planet with a layered internal structure. Knowledge about ...
Origin of Solar System : Hypotheses
Big-Bang Theory : (most accepted) Concept: Universe originated ~13.8 billion years ago from an extremely dense, hot singularity. Process: Sudden ...
Backe Line Test
The relief indicates the difference between the RI (Refractive Indices) of the mineral grains and the surrounded cement material. The ...
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