Question

(iv) Briefly explain the indirect sources of information of the interior of the
earth other than those of seismic activity.
Answer the following questions in about 150 words.​

Answer 1

Answer:

Here is the explanation.

Explanation:

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”. These projects have provided information about interior of Earth through analysis of materials collected at different depths.

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.