Question

A. Answer these questions briefly.
1. How can the landforms be categorised?
2. Define mountains. Distinguish between mountain range and mountain belt. Give examples.
3. How are fold mountains formed?
4. Mention the forces that help in the folding of the crust?
5. What is a geosyncline?
6. How do the tectonic plates help in mountain formation?
7. Give examples of block mountains and rift valleys.
8. Why are volcanic mountains also called mountains of accumulation?​

Answer 1

Answer:

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Explanation:

1. Landforms are categorized by the processes that create them. They are – Aeolian, coastal, oceanic, erosion, fluvial, mountain, glacial and volcanic. Each of the categories is divided into sub-category. ... Costal or oceanic types are

normally formed by erosion.

2.Mountain range refers to mountains formed. in the same age and with the same process arranged in narrow and long belt, for example, Himalayan mountain range. Mountain groups are highlands composed of different mountains but with a proper arrangement, for example, Juan mountain group.

3.Fold mountains are created where two of Earth’s tectonic plates are pushed together.

4.Compression al force causes crustal bending leading to the formation of folds or crustal warping leading to local rise or subsidence of crustal parts. Crustal bending: When horizontal forces work face to face the crustal rocks are bent due to resultant compressional and tangential force.

5.a large-scale depression in the earth's crust containing very thick deposits.

6.Movements of tectonic plates create volcanoes along the plate boundaries, which erupt and form mountains. A volcanic arc system is a series of volcanoes that form near a subduction zone where the crust of a sinking oceanic plate melts and drags water down with the subducting crust

7.Block mountains founds in all the continents e.g. Vosges mountain in Europe, Mountain ranges of Satpura and Vindhya (Narmada and Tapi)in India, The Great African Rift Valley (valley floor is graben), The Sierra Nevada Block Mountains in North America, Harz Block Mountains in Germany..

8.they are called mountains of accumulation because Volcanic “mountains” are formed from the accumulated ejecta and lava that emerge from the cone or caldera of the volcano. As soon as magma comes out from the earth's interior to the earth surface, it is known as lava