Crust, mantle and core || Chapter-Interior of the earth || Topic-Mantle || UnipheaEdu || CBSE<br /><br />Subject: Geography<br />Class: 7<br />Chapter: Interior of earth <br />Topic: Mantle <br />Video Type: Full explanation<br />CBSE<br />NCERT<br /><br /><br />0:00 Introduction<br />0:10 Mantle <br />6:25 Ending <br /><br /><br />This is complete explanation of mantle.This layer lies below the crust. The average thickness of this layer is 2900 km.<br />It is made up of two layers, the upper mantle and the lower mantle. The upper mantle extends from the Moho Discontinuity to a depth of 700 km. It is cooler and composed of solid rocks.<br />The lower mantle extends from 700 km to 2900 km. It is hotter and denser than the upper mantle.<br /><br />Basics of interior of earth : https://youtu.be/Z0K6pKQMiKg<br /><br />About Crust: https://youtu.be/1Tsriy45jIU
