plains are known as .... due to their neglible elevation
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Answer:
Landforms are the physical features on the Earth’s surface. Mountains, Plateaus and Plains are some major landforms of the Earth. Natural processes such as weathering, water, elevation, sinking, and erosion of the soil are constantly shaping the Earth’s surface. It doesn’t really happen overnight. In fact, it takes hundreds and thousands of years for us to notice these changes. These processes lead to the formation of various landforms. In other words, landforms originate from these geological processes. Let’s understand the processes that shape the landforms.
External Process
External process means effects caused by external factors such as rain or wind. These cause erosion and deposition. Erosion and deposition are natural processes that change the surface of the Earth. To clarify, erosion is a process in which sediments get deposited or dropped off in a different location. And sediments are nothing but the materials on the Earth’s surface such as soil and rocks.
Internal Process
As the name suggests, internal processes are processes that occur inside the surface of the Earth i.e. beneath the crust. For example, volcanic eruption and plate tectonics. These occur because of the intense heat in the Earth’s core which causes the molten rock in the mantle layer to move. As a result, creating uneven movement on the surface. These layers are either uplifting or sinking.
Types of Landforms
Depending upon the elevation and slope, landforms can be categorized into Mountains, Plateaus, and Plains. Let us look at them individually.
Major Landforms of the Earth
Source: wpclipart
Mountains
Major Landforms of the Earth
Source: Wikia
A Mountain is any landmass that is higher and steeper than a hill. A hill is a landform that extends above the surrounding terrain. In general, the mountains are higher than 2000 ft. Like in any other natural elevation such as atmosphere, as you go higher, the temperature drops and the climate becomes colder. Thus, habitation becomes harsher. And that’s why there is less habitation in the mountainous areas.
Furthermore, because of the temperature drop, it is not uncommon for high mountains to develop ice on them. In fact, some of them have glaciers. Glaciers are permanently frozen rivers of ice. Also, because of the steep slopes of the mountains, there is less land available for proper farming.
Considering the sea base as the scale, if we calculate the height of the surface, then there are mountains even under the ocean. For example, Mauna Kea (Hawaii) in the Pacific Ocean. In fact, it is elevated higher than Mt. Everest.
A range is a line of mountains. The Himalayas in Asia, the Alps in Europe and the Andes in South America are some examples of mountain ranges. These ranges are the storehouses of water. Many rivers have their origins in these mountains. In fact, the glaciers of this landform are the source of these rivers.
Mountains are generally untouched by civilisations and thus have the endangered species of plants and animals. They also inhibit a rich variety of flora and fauna. There are three categories of mountains. Let us know about them.
1. Fold Mountains
Major Landforms of the Earth
Source: Quora
When two tectonic plates collide and the edges of these plates ‘fold’ because of the enormous push force between them it results in the creation of fold mountains. Scientists classify the fold mountains into ‘young fold’ and the ‘old fold’ mountains according to its age.
The young fold ones are between 10 and 25 million years old. For example, the Himalayas in Nepal, the Alps in Europe and the Andes in South America.
The old fold ones are older than 200 million years. For example, the Aravalli mountains in India (Rajasthan) and the Ural mountain in Russia.
2. Block Mountains
Major Landforms of the Earth
Source: Quora