Ans. Natural calamities such as earthquakes, volcanic eruption, storms and floods cause widespread destruction.
Ans. The Tibet plateau is the highest plateau in the world with a height of 4,000 to 6,000 metres above the mean sea level.
Ans. Several sports like paragliding, hang gliding, river rafting and skiing are popular in the mountains.
Ans. Due to harsh climate less people live in the mountain areas. Since the slopes are steep, less land is available for farming.
Ans. Mauna Kea (Hawaii) in the Pacific Ocean is an undersea mountain. It is higher than Mount Everest being 10,205 metres high.
Ans. Volcanic Mountains are formed due to volcanic activity. Mt.Kilimanjaro in Africa and Mt.Fujiyama in Japan are examples of such mountains.
Ans. Continuous movement within the earth leads to upliftment and sinking of the earth’s surface at several places.
Ans. The Appalachians in North America and the Ural mountains in Russia have rounded features and low elevation. They are very old fold mountains.
Ans. Internal and external processes are the two processes that lead to the formation and development of landforms.
Ans. Internal process is type of a continuous movement taking place within the earth that leads to the upliftment and sinking of the earth’s surface at several places.
Ans. Difference between erosion and deposition
The wearing away of the earth’s surface is called erosion.
The surface is being lowered by the process of erosion and rebuilt by the process of deposition.
Ans. Block Mountains are created when large areas are broken and displaced vertically. The uplifted blocks are termed as horsts and the lowered blocks are called graben.
Ans. Quite often we use the land in a wasteful manner, for example constructing houses on a fertile land. Similarly we throw garbage on land or in water making them dirty. We should avoid using such important gifts of nature in a careless manner. The available land is not only for our use. It is our duty to leave the earth a better place for future generations as well.
Ans. Features of mountains
1. Mountains are any natural elevation of the earth surface.
2. The mountains may have a small summit and a broad base.
3. It is considerably higher than the surrounding area. Some mountains are even higher than the clouds.
4. The slopes are steep; less land is available for farming.
5. Climate of mountains is harsh.
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