MOUNTAINS Mountains are great elevated land surfaces resulting from intense action of internal forces. They have steep slopes and show distinct peaks. Mountains are classified according to their mode of formation, resulting in four major types of mountains. These are (i) Fold mountains (ii) Block Mountains (iii) Volcanic Mountains and (iv) Residual mountain (a) […]
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The structure of the earth is grouped into two zones: The outer structure and the internal structure. THE OUTER STRUCTURE OF THE EARTH The outer structure of the earth is made up of four zones or layers: Lithosphere Hydrosphere Atmosphere Biosphere Lithosphere: This is the solid portion of the earth. It is the outermost zone
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The shape of the earth The earth has a spherical shape. Its shape can also be described as GEOID. Though we walk on “flat” surface, it is almost like a sphere and it is slightly flattened at the two poles. There are many facts to prove that the earth is spherical. Size of the Earth