The changes on the Earth's surface mainly occur due to two types of forces:
Endogenic Forces: Forces originating from within the Earth.
Exogenic Forces: Forces that work on the Earth's surface through external agents like water, wind, and ice.
These forces originate from the interior of the Earth and are responsible for activities like the movement of tectonic plates, earthquakes, and volcanic eruptions.
Sudden Forces
Act quickly and cause immediate changes.
Examples: Earthquakes, Volcanoes, Landslides
Diastrophic Forces
Operate slowly over time.
Examples: Mountain building, Faulting, Folding
These forces are influenced by atmospheric and climatic elements.
They drive processes like erosion and deposition.
Water: Rivers form flood plains, deltas, and ox-bow lakes.
Wind: Forms sand dunes and mushroom rocks in deserts.
Glaciers: Create U-shaped valleys, moraines, and glacial lakes.
Feature | Endogenic Forces | Exogenic Forces |
---|---|---|
Source | From the interior of the Earth | External agents like wind, water, and ice |
Impact | Earthquakes, Volcanoes, Mountain building | Erosion, Deposition, Climate-induced changes |
Nature | Sudden (earthquakes) and Slow (mountain formation) | Continuous and gradual in effect |
Examples | Himalayas, Deccan Plateau | Ganga-Brahmaputra Delta, Thar Desert |
Both endogenic and exogenic forces play a crucial role in shaping the Earth’s landforms.
Understanding these processes is essential for sustainable development.
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