NCERT Solution for Class 6 Geography Chapter 6 - Major Landforms of the Earth
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NCERT Solution for Class 6 Geography Chapter 6 - Major Landforms of the Earth Page/Excercise 46
Answer the following questions briefly.
(a) What are the major landforms?
(b) What is the difference between a mountain and a plateau?
(c) What are the different types of mountains?
(d) How are mountains useful to man?
(e) How are plains formed?
(f) Why are the river plains thickly populated?
(g) Why are mountains thinly populated?
(a) The major landforms of the earth are:
|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.
Fill in the blanks.
(a) A ________ is an unbroken flat or a low-level land.
(b) The Himalayas and the Alps are examples of _________ types of mountains.
(c) __________ areas are rich in mineral deposits.
(d) The _________ is a line of mountains.
(e) The _________ areas are most productive for farming.
(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.
- On an outline map of the world, mark the following:
- Mountain ranges : Himalayas, Rockies and Andes
- Plateau : Tibet
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