What is external process?
It is the continuous wearing down and rebuilding of the land surface.
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?
What kind of landforms are found in your state? Based on the reading of this chapter, say how they are of use to the people.
Quite often we use the land in a wasteful manner'. What do gou mean by wasteful manner'?[V. Imp.]
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 producting for farming.
State whether these sentences are true (T) or false (F).
(i) A rich variety of flora and fauna is found in the mountains.
(ii) The Rope Bridge is in Arunachal Pradesh.
(iii) Plateaus are vast stretches of flat land.
(iv) Plains are very useful because they are rich in mineral deposits.
(v) As we go higher, the climate becomes hotter.
(vi) Mt. Fujiyama in Japan is an example of volcanic mountains.
(vii) It is difficult to carry on construction work in plains.
How many types of mountains are there? Write briefly about each of them with help of diagrams.