Political Science Geography Class 11 English

  CBSE Class 11 Geography NCERT Solutions Chpater 2 The Origin And Evolution of The Earth 1. Multiple choice questions. (i) Which one of the following figures represents the age of the earth? (a) 4.6 million years (b) 13. 7 billion years (c) 4.6 billion years (d) 13. 7 trillion years. Ans. (c)  4.6 billion years. (ii) Which one of the following has the longest duration? (a) Eons (b) Period (c) Era (d) Epoch. Ans. (a)  Eons. The longest division of geological time. (iii) Which one of the following is not related to the formation or modification of the present atmosphere? (a) Solar winds (b) Differentiation (c) Degassing (d) Photosynthesis. Ans. (b)  Differentiation. It is the action or process of distinguishing between two or more things or people. (iv) Which one of the following represents the inner planets? (a) Planets between the sun and the earth (b) Planets between the sun and the belt of asteroids (c) Planets in gaseous state (d) Planets without satellite(s). An...

  Class 11 Geography Fundamental of Physical Geography Chapter-3 Interior of the Earth This chapter deals with : Sources of information of about the earth's interior Direct sources Indirect sources Earthquake Earthquake waves Propagation of earthquake waves Emergence of shadow zone Types of earthquakes Effects of earthquakes Structure of the earth The crust The mantle The core Volcanoes and volcanic landforms Types of volcanoes Shield volcano Composite volcanoes Caldera Flood basalt provinces Mid ocean ridge volcanoes Volcanic landforms intrusive forms, plutonic rocks, batholiths, laccoliths, lapolith, phacolith, sills & dykes Sources of Information about the Earth’s Interior:  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...

  CBSE Class 11 Geography NCERT Solutions Chapter 3 Interior of the Earth 1. Multiple choice questions. (i) Which one of the following earthquake waves is more destructive? (a) P-waves (b) S-waves (c) Surface waves (d) None of the above. Ans.   (c)  Surface waves. The two most important types of surface waves are Rayleigh waves and Love waves. (ii) Which one of the following is a direct source of information about the interior of the earth? (a) Earthquake waves (b) Volcanoes (c) Gravitational force (d) Earth magnetism. Ans. (b)  Volcanoes. The magma which comes out from the interior of the Earth, gives us a lot of information about the interior of the Earth. (iii) Which type of volcanic eruptions have caused Deccan Trap formations? (a) Shield (b) Flood (c) Composite (d) Caldera. Ans. (b)  Flood. The bulk of volcanic eruptions which occurred in the western ghats some 66 million years ago, caused the Deccan trap to form. (iv) Which one of the following describes t...