I NEED PROJECT ON LANDFORMS of the earth
Answers
Weathering, water, elevation, sinking, and erosion of the soil are constantly shaping the surface of the Earth. It doesn’t really happen overnight but takes hundreds and thousands of years for us to notice these changes. These are the natural processes that lead to various formations of the Landforms. Landforms originate from these geological processes. Let’s understand the processes that shape the landforms.
External Process
External process means effects caused by the external factors such as rain or wind. Erosion occurs when material on the surface like soil and rocks which are called sediments are deposited or dropped off in a different location. These natural processes change the surface of the Earth. Erosion and Deposition are the processes that are occurring externally.
Internal Process
Needless to say, internal processes occur inside the surface of the Earth, beneath the crust. The internal process, like Volcanic eruption and Plate tectonics, are caused because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move thus creating uneven movement on the surface. These layers are either uplifting or sinking.
Landforms can be categorized into Mountains, Plateaus, and Plains depending upon their elevation and slope. Let us look at them individually.
Fold mountains are created when two tectonic plates collide and the edges of these plates ‘fold’ because of the enormous push force between them. Scientists classify the fold mountains into ‘young fold mountains’ are the ‘old fold mountains’ according to the mountains age.
Block mountains occur when large areas are broken and displaced vertically. These large areas of rock, sometimes stretching across hundreds of kilometres are created by tectonic and localized stresses in the Earth’s crust.
The uplifted blocks are termed as horsts. The lowered blocks are called grabens. They resemble piano keys. The examples of block mountains are the Rhine valley and the Vosges mountain in Europe.
Volcanic mountains are formed by magma rising up from the mantle to the crust of the earth. The example of volcanic mountains is Kilimanjaro and Mount Fuji.Plateaus are elevated flatlands. It is a flat land which is standing above the surrounding area. Plateaus may have one or more sides with steep slopes. Depending upon the plateau their height varies from a few hundred meters to several thousand meters.
The most familiar plateau in India is the Deccan Plateau and these plateaus are mainly formed by lava, meaning they are volcanic in origin. The extension of Deccan Plateau is the Chhotanagpur plateau in India. It’s a reserve for minerals such as iron ore, manganese and coal. African plateau is most famous for gold and diamond mining.
The Tibetan plateau is the highest plateau in the world. Plateau regions give birth to the waterfall, for example, Hundru falls in the Chhotanagpur plateau and the Jog falls in Karnataka. These plateaus are also centres for tourism and scenic activities.
The young fold mountains are between 10 and 25 million years old such as the Himalayas in Nepal, the Alps in Europe and the Andes in South America.
Now, the old fold mountains are older than 200 million years old such as the Aravalli mountains in India (Rajasthan) Ural mountain in Russia.
Explanation:
Landforms
Weathering, water, elevation, sinking, and erosion of the soil are constantly shaping the surface of the Earth. It doesn’t really happen overnight but takes hundreds and thousands of years for us to notice these changes. These are the natural processes that lead to various formations of the Landforms. Landforms originate from these geological processes. Let’s understand the processes that shape the landforms.
External Process
External process means effects caused by the external factors such as rain or wind. Erosion occurs when material on the surface like soil and rocks which are called sediments are deposited or dropped off in a different location. These natural processes change the surface of the Earth. Erosion and Deposition are the processes that are occurring externally.
Internal Process
Needless to say, internal processes occur inside the surface of the Earth, beneath the crust. The internal process, like Volcanic eruption and Plate tectonics, are caused because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move thus creating uneven movement on the surface. These layers are either uplifting or sinking.
Landforms can be categorized into Mountains, Plateaus, and Plains depending upon their elevation and slope. Let us look at them individually.