Class 6 Geography Chapter 6 Ratna Sagar

 Long Answer type Questions:-

Q1. Classify mountains of the basis of their origin. Explain each type.

Ans. Classification of mountains on the basis of their origin are as follows:-

        Fold Mountains- These mountains are the youngest mountains of the world, such mountains are created when two tectonic plates are pushing each other in opposite direction. Himalaya is the example of youngest fold mountain.

        Block Mountains- When cracks are caused in the earth crust due to tensional forces then these faults can break the crust into blocks. Due to rise of these blocks, block mountain is formed. It has steep slops and flat top.

        Volcanic Mountains- Accumulation of hot magma around the vent of the volcano due to regular eruption, which forms a cone shaped mountain. Such conical mountains are called Volcanic Mountains.

Q2. Explain the process involved in the formation of mountains.

Ans. The Process involved in the formation of mountains are as follows:-

        Fold Mountains- These mountains are the youngest mountains of the world, such mountains are formed when two tectonic plates are pushing each other in opposite direction. Himalaya is the example of youngest fold mountain.

        Block Mountains- When cracks are caused in the earth crust due to tensional forces then these faults can break the crust into blocks. Due to rise of these blocks, block mountain is formed. It has steep slops and flat top.

        Volcanic Mountains- Accumulation of hot magma around the vent of the volcano due to regular eruption, which forms a cone shaped mountain. Such conical mountains are called Volcanic Mountains.

Q3. How are mountains useful to us?

Ans. Mountains are useful to us in following ways:-

        - They help in condensation of moisture by forcing the winds to rise.

        - They act like a barrier against cold and hot wind.

        - Rivers originating from mountains provide water throughout the year.

        - The mountain slops have rich pastures and valuable forest.

        - It provide sites for building dams for the generation of hydroelectricity.

        - In summer mountains serve as tourist and health resorts.

        - Some mountains have rich reserves of minerals.

Q4. How do mountains differ from plateaus?

Ans. Mountains differ from plateaus in many ways such as:-

        - Mountains are very high but plateaus have less height then that.

        - Mountains have conical peaks but plateaus have flat top.

Q5. What is the significance of plains for human beings?

Ans. Significance of plains for human beings are as follows:-

        - Plains are source of food grain, fruits and vegetable for the world. As Plains provide support to infrastructure development. 

        -  Most of the important cities are developed in plains because life is easier in plains.

        - Transportation is easier in plains compare to plateaus or mountains.