Endogenetic Movements — Flashcards

Answer

Endogenetic movements are internal movements that occur within the Earth's interior, particularly in the upper layer of the mantle. These movements are caused by tremendous energy released by radioact…

Answer

Based on velocity, internal movements are classified into: 1) Slow movements - occurring continuously like formation of mountains and continents, 2) Sudden movements - occurring as events like earthqu…

Answer

Orogenic movements are mountain-building movements. They create fold mountains (like the Himalayas) when horizontal pressure causes rock layers to fold, and block mountains (like Meghalaya Plateau) wh…

Answer

Fold mountains are formed when horizontal pressure from opposite directions acts on soft rock layers. This compression causes the rock layers to bend and form folds. When pressure is very high, large-…

Answer

Block mountains are formed when tension in the earth's crust creates parallel faults. The land between these faults gets uplifted, forming a block-like structure with flat tops and steep slopes. Examp…

Answer

Rift valleys are formed when two parallel faults develop in the earth's crust due to tension. The land between these faults subsides (sinks down), creating a deep valley with steep slopes on both side…

Answer

Epeirogenic movements are continent-building movements that occur towards or away from the earth's center. They cause vast parts of the earth's crust to be uplifted (forming continents and plateaus ab…

Answer

An earthquake is the trembling of the earth's surface caused by movements in the earth's interior. It occurs when tremendous tension builds up in the earth's crust due to internal movements. When this…