Science & Technology Prelims Question

Direct Sources: The most easily available solid earth material is surface rock or the rocks we get from mining areas. Besides mining, scientists have taken up a number of projects to penetrate deeper depths to explore the conditions in the crustal portions. Scientists, world over, are working on two major projects, such as the “Deep Ocean Drilling Project” and the “Integrated Ocean Drilling Project”.
Volcanic eruption forms another source of obtaining direct information. As and when the molten material (magma) is thrown onto the surface of the earth, during volcanic eruption, it becomes available for laboratory analysis.
Indirect Sources: The analysis of properties of matter indirectly provides information about the interior.
An important source of information is the meteors, that, at times, reach the earth. However, it may be noted that the material that becomes available for analysis from meteors, is not from the interior of the earth. The material and the structure observed in the meteors are similar to that of the earth. They are solid bodies developed out of materials same as, or similar to, our planet. Hence, this becomes yet another source of information about the interior of the earth.

Direct Sources: The most easily available solid earth material is surface rock or the rocks we get from mining areas. Besides mining, scientists have taken up a number of projects to penetrate deeper depths to explore the conditions in the crustal portions. Scientists, world over, are working on two major projects, such as the “Deep Ocean Drilling Project” and the “Integrated Ocean Drilling Project”.
Volcanic eruption forms another source of obtaining direct information. As and when the molten material (magma) is thrown onto the surface of the earth, during volcanic eruption, it becomes available for laboratory analysis.
Indirect Sources: The analysis of properties of matter indirectly provides information about the interior.
An important source of information is the meteors, that, at times, reach the earth. However, it may be noted that the material that becomes available for analysis from meteors, is not from the interior of the earth. The material and the structure observed in the meteors are similar to that of the earth. They are solid bodies developed out of materials same as, or similar to, our planet. Hence, this becomes yet another source of information about the interior of the earth.

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