CBSE Class 11 Geography Chapter 3 Interior of the Earth Notes
Earth is a dynamic planet. The surface of the earth is visible to us, but how can we know about the interior of the earth? There are direct and indirect sources to study about the interior structure of the earth.
Direct sources include volcanic eruptions, mining areas and drilling projects. The indirect sources on the other hand include analysis of the properties of matter, like temperature, pressure and density of material. Some of the other indirect sources include meteors, gravitation, magnetic field and seismic activity. Please refer Class 11 Geography Chapter 3 Interior of the Earth Notes for more information.
CBSE Revision Notes 