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Class 6 NCERT Solutions Geography Chapter 6 - Major Landforms of the Earth

Major Landforms of the Earth Exercise 46

Solution 1

(a) The major landforms of the earth are:

  • Mountains
  • Plateaus
  • Plains

(b)

Mountain Plateau
It is a naturally elevated surface of the earth. It is an elevated flat land.
It is higher than the surrounding area. It is a flat-topped land that stands above the surrounding area.
It generally rises above 600 meters. It rises from a few hundred meters to several thousand meters.
 They are rich in forests.  They are rich in mineral deposits.
Examples: Rockies, Alps, Himalayas, Andes, etc. Examples: Tibet plateau, Deccan plateau, East African plateau, etc.

 

(c) The different types of mountains are:

  • Fold Mountains: They are formed from the folding of earth's crust.
  • Volcanic Mountains: They are formed due to volcanic activity.
  • Block Mountains: They are created when large areas are broken and displaced vertically.

(d) Mountains are useful to man in the following manner:

  • They are storehouses of water. Many rivers have their sources in the glaciers.
  • Water present in the mountains is ideal for agriculture and irrigation purposes. It also helps in the production of hydroelectricity.
  • They have rich variety of flora and fauna.
  • The forests provide fuel, fodder, shelter and other products.
  • They provide idyllic sites for tourists and enhance tourism for the specific country.
  • They encourage several sports such as paragliding, river rafting, etc.

(e) Plains are large stretches of flat land.  They are formed mostly by the rivers and its tributaries.

  • The rivers flow down the slopes of mountains and erode them.
  • They carry down/forward the eroded material (stones, sand, etc.).
  • They then deposit these materials along their courses or in the valleys.

Thus, these deposits then collected then form plains.


(f) River plains are generally very thickly-populated because:

  • These plains are flat in nature and also very fertile.
  • This provides favourable conditions for agriculture and also for human inhabitation.

Also, construction of transport network is easy.

(g) Mountains are thinly populated because of:

  • Harsh climate.
  • Hardly any land available for farming.
  • Have steep slopes, which make it difficult to construct houses.

Few developed means of transport.

Solution 2

Solution 3

(a) A plain is an unbroken flat or a low-level land.

(b) The Himalayas and the Alps are examples of fold types of mountains.

(c) Plateau areas are rich in mineral deposits.

(d) The range is a line of mountains.

(e) The plain areas are most productive for farming.

Solution 4

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