Additional - Question:
Que: Whatn is internal process?
Ans: It is aa type of continuous movement within the earth that lead to the upliftment and sinking of the earth's surface at several places.
Que: What is exrternal process?
Ans: It is the continuous wearing down and rebuilding of the land surface.
Que: What is called, ersion?
Ans: The wearing away of the earth's surface is called ersodion.
Que: What happens when you go higher?
Ans: The Climate becomes colder.
Que: Give examples of young fold mountains.
Ans: The Himalayan Mountains and the Alps.
Que: What are features of young fold mountains.
Ans: They have rugged relief and high conical peaks.
Que: What is special with Mauna Kea?
Ans: It is higher than Mt. Everest being 10,205 metres high.
Que: give an example of block mountains.
Ans: The Rhines valley and the Vosges mountain in Europe.
Que: Give exaples of Volcanic mountains.
Ans: Mt. Kilimanjaro in Africa and Mt. Fujiyama in japan.
Que: Name the plateau which is famous for good and diamond mining.
Ans: the African plateau.
Que: Name some plain of india.
Ans: The Ganga - Brahmaputra plains and the Indo - gangrtic plains.
Que: Write some natural calamities.
Ans: Earthwuakes, floods, cyclone, drought, etc.
Que: 'Quite often we use the land in a wasteful manner'. What do gou mean by 'wasteful manner'?
Ans: Using fertile land for building houses.
Que: Write a few features of mountains.
Ans:
1. Mountains are natural elevations of the earth's surface.
2. They are higher than the surrounding area.
3. Some of them are even higher than the clouds.
4. The climate of mountains is harsh, which makes them lesss suitable for human habitation.
5. Mountains have steep slopes. Hence, farming is quite difficult here.
Que: What are block mountains?
Ans: Block mountains are created when large areas are brokn and displace vertically. The uplifted blocks are known as horsts and the lowered blocks are known as garden. Examples: The Rhine valley and the Vosage mountains in Europe.
Que: How are plateaus useful for men?
Ans: Plateaus are very useful for man because they have rich mineral deposits. Many of the mining areas in the world are located in the plateau. For example, the African plateau is famous for glod and diamond mining. the Chhotanagpur plateau in India has huge reserves of iron, coal and manganese. In the plateau regions, one can find several waterfalls. Many plateaus have scenic spots which attract tourist on large scale.
