Earth Movements-endogenic Forces Earthquakes & Volcanoes, Exogenic forces :weathering and erosion. Theories Isostasy, Continental drift & Plate — Chapter Summary
Telangana Open School (TOSS) · Class 12 · Geography
Summary of Earth Movements-endogenic Forces Earthquakes & Volcanoes, Exogenic forces :weathering and erosion. Theories Isostasy, Continental drift & Plate.
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Overview
The surface of the Earth is constantly changing due to forces originating from within and outside the planet. These forces shape the landforms we see today. Internal forces, known as endogenic forces, cause movements like earthquakes and volcanoes, and build mountains and plateaus. External forces,
Key Concepts
These are internal forces that originate
These are internal forces that originate from deep within the Earth and cause movements in the crust. They are divided into slow diastrophic movements
These are external forces like wind
These are external forces like wind, water, and ice that act on the Earth's surface. They include weathering (breaking down of rocks) and erosion (rem
It is the state of gravitational
It is the state of gravitational balance between the Earth's crust and mantle. Heavier mountain ranges have deep roots into the denser mantle, just li
Proposed by Alfred Wegener
Proposed by Alfred Wegener, it states that all continents were once joined in a single supercontinent called Pangaea, which later broke apart and drif
The Earth's lithosphere is divided into
The Earth's lithosphere is divided into large and small plates that float on the semi-molten asthenosphere. Their movement causes earthquakes, volcano
Learning Objectives
- Understand different earth crustal movements
- Explain the features formed by earth movements
- Study sudden movements like earthquakes and volcanoes
- Explain the concept of isostasy
- Understand the continental drift theory
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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