EXERC
A. Answer the following questions :
1. What are Plains?
2. What is Orogenesis?
3. Name the different types of mountains. Describe
each of them with examples.
4. What are Plateaus?
5. Name the various types of plateaus with examples.
6. State a few advantages of plains.
7. Explain the types of depositional plains.
8. State the main uses of mountains.
9. Differentiate between intermontane plateau and
volcanic plateaus.
10. Define a plain. How does it differ from a plateau?
11. What are mountains?
12. State any two characteristics of young fold mountains.
Answers
Answer:
1) answer = In geography, a plain is a flat expanse of land that generally does not change much in elevation, and is primarily treeless.
2) answer = Orogenesis, the process of mountain building, occurs when two tectonic plates collide – either forcing material upwards to form mountain belts such as the Alps or Himalayas or causing one plate to be subducted below the other, resulting in volcanic mountain chains such as the Andes.
3) answer =Mountains are divided into four main types: upwarped, volcanic, fault-block, and folded (complex). Upwarped mountains form from pressure under the earth's crust pushing upward into a peak .
4) & 5) answer = Example: the Tibetan Plateau, the Columbian plateau, the Bolivian plateau, and the Mexican plateaus. Continental plateaus are bordered by the plains or oceans on all sides forming away from mountains. Example: the Antarctic Plateau in East Antarctica.
6) answer = Advantages of plain landforms:
Transportation is easier in plain landforms.
Harvesting is lot more easier in the plain landforms.
The plain landforms are the most fertile landforms.
The plain landforms the most suitable living place for humans.
7) answer = Depositional plains It is of five types: ... Glacial plains: These are of two types: True glacial plains: These are formed of pure glacial materials; Outwash plains: These are formed due to deposition of materials after the ablation of glaciers and ice sheets.
8) answer = 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. Also, mountains have a rich variety of flora and fauna. The forests provide fuel, fodder, shelter and other products like gum, raisins, etc.
9) answer = When a plateau is covered by mountains on all sides,it is called an intermontane plateau. ... Volcanic plateaus are produced by the volcanic activity. The lava which flows down from volcano,it accumulates and form a plateau.