mention any 3 sources that helps to know about the earth's interior?
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The knowledge about interior of the earth is obtained through direct sources and indirect sources. Direct sources include rock materials from mining areas and molten magma from volcanic eruptions. ... Indirect sources include meteors that at times reach the earth, gravitation, magnetic field, and seismic activity
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Indirect sources include meteors that at times reach the earth, gravitation, magnetic field, and seismic activity. Most of our information about earth's interior has come from seismic studies. Seismic waves produced during an earthquake are recorded by a seismograph when these waves reach the surface of the earth.
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