geomorphology & earth landforms section 10 MCQ Questions & Answers Detailed Explanation

Answer: (a)

1. The concept of peneplain is propounded by Davis. A peneplain is a low-relief plain representing the final stage of fluvial erosion during times of extended tectonic stability.
2. The concepts of base level and widespread erosion of great mountain ranges to low elevation and relief are the cornerstones of Powell’s work.
3. The continental drift concept propounded by Wegener 1912. He proposed that the continents we know today were once all attached in a single landmass he called Pangaea. They were surrounded by one global ocean, but then broke apart and somehow “drifted” to their separate places on the globe.
4. The concept of plate tectonics propounded by Hary Hess. Hess described how hot magma would rise from under the crust at the Great Global Rift. When the magma cooled, it would expand and push the tectonic plates apart.

Answer: (b)

Answer: (b)