Q1 Name two sources through which we get information about Earth’s interior structure.
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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. Besides, scientists are working on “Deep Ocean drilling Project” and “Integrated Ocean Drilling Project”.
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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. There are two types of seismic waves- body waves and surface waves.
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