April 2022

UPSC

SOURCES OF INFORMATION ABOUT THE INTERIOR. [ PART 2]: UPSC Daily Important Topic | 25 April 2022

 INDIRECT SOURCES. □ Seismic waves ◇ They are the most important source available to understand the layered structure of the earth.  ◇ The velocity of seismic waves changes as they travel through materials with different elasticity and density.  □  Meteorites ◇ Meteorites and Earth are born from the same nebular cloud. Thus, they are likely

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