NCERT Class 6 Geography Chapter 6: Major Landforms of the Earth Complete Notes Part 1

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Major Landforms of the Earth

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Processes

There are two processes commonly known:

  • Internal – Upliftment and Sinking

  • External – Erosion and Deposition

Now we start to understand major landforms with the processes. There are various kind of process that lead to formation of landforms and those are internal process which occurs below the earth surface or you have the external process which a externally used for example if you have a kind of rainfall that is coming and soil erosion that takes place. Soil is eroded later on and deposited on to the river basin, so you would have deposition that would happened.

Now this kind of Erosion and Deposition is kind of external process that is included externally. However they are process which are affected into internally for example you have kind of volcanic eruption that takes please as a result you have plate tectonics that happened. So all this process are internal and the basic idea for any internal process to originate is process of upliftment or subsidence so you have either the sinking of the earth curst or the earth crust surface or you have the upliftment.

Now when we talk about upliftment you have creation of mountain that takes place and when we talk about subsidence you have kind of rolling pattern. We will talk about the ideas of slope development given by Davis, Penck and so on. It is basically the removal of the upper top layers and deposition in later parts and you also have faults and folds that takes place. So all this are kind of internal feature which occurs either due to kind of faults or folds, subsidence or upliftment.

Now next important think is if a broadly classify landform we can simply say there are three types mountains, Plateaus and Plains.

Mountains (Vs. Hill), Plateaus & Plains

Image of Mountains, Plateaus and Plains

Image of Mountains, Plateaus and Plains

So if I say if it kind of flat we call it plains. If it kind of tabular mass which is protruding onto flatland we call it plateaus. And finally if you have kind of elevated land mass we call it mountains. Now most the interesting thing is there are some terms one must remember.

Image for understanding Different between Hill, Mountains,Ra …

Difference between Hill, Mountains,Range and Cordilleras

So this is a kind of progression of mountains. Now what will understand today is the fundamental difference that we have talk about in structure of mountains, Plateaus and Plains.

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