NCERT Solutions For Class 6 Social Science Chapter 16 Major Landforms of the Earth

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

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

(3) Plateau areas are rich in mineral deposits.

(4) The range is a line of mountains.

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

(a) (iii) aspect   ✓

(b) (i) the mountains  ✓

(c) (iii) India   ✓

(d) (iii) China   ✓

(e) (ii) the Alps ✓

(a) The major landforms are mountains, plateaus and plains.

(b) 

(c) There are three types of mountains- Fold Mountains, Block Mountains and the Volcanic Mountains.

(d) Mountains are very useful to men in the following ways:

• The mountains are a storehouse of water. Many rivers have their source in the glaciers in the mountains.
• Water from the mountains is also used for irrigation and generation of hydro-electricity.
• The river valleys and terraces are ideal for cultivation of crops.
• Mountains have a rich variety of flora and fauna.
• The forests provide fuel, fodder, shelter and other products like gum, raisins, etc.
• Mountains provide an idyllic site for tourists.
• They visit the mountains for their scenic beauty.
• Several sports like paragliding, hang gliding, river rafting and skiing are popular in the mountains.

(e) Most of the plains are formed by rivers and their tributaries. The rivers flow down the slopes of mountains and erode them. They carry forward the eroded material. Then they deposit their load consisting of stones, sand and silt along their courses and in their valleys. It is from these deposits that plains are formed.

(f)  Plains are very thickly populated regions of the world because plains are very fertile and construction of transport network is easy.

(g) Mountains are thinly populated because of harsh climate, steep slopes and less land is available for farming.