a.
Introduction:
The internal structure of Earth is understood with the help of the study of earthquakes. The changes in the properties of rocks at depth are determined by the variations in the time of propagation of P and S waves
b.
Introduction:
The internal structure of the Earth is majorly divided into three parts. The division of internal structure is based on the composition of materials and densities.
c.
Introduction:
The study of seismic waves helped to conclude that the internal structure of the Earth is mainly divided into three distinct layers. These layers are further subdivided based on physical properties.
d.
Introduction:
The study of seismic waves has developed an understanding of the internal structure of Earth. The velocities of P and S waves helps to identify the rigidity of the material.
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