Various landforms observed on the surface of the earth are due to the:
- 1. differences in the type and structure of the crustal material
- 2. differences in the land forming processes
- 3. differential rates of the processes at different places on the Earth’s surface
Select the correct answer using the code given below :
1 only
1 and 2 only
2 and 3
1, 2 and 3
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CAPF – 2015
– **Statement 1 (differences in the type and structure of the crustal material):** Different rock types (e.g., hard granite vs. soft sedimentary rock) and their structure (e.g., folded, faulted, horizontal strata) respond differently to erosional and tectonic forces, leading to varied landforms (e.g., differential erosion creating mesas and buttes).
– **Statement 2 (differences in the land forming processes):** Both endogenic processes (like volcanism, earthquakes, plate movements causing uplift and faulting) and exogenic processes (like weathering, erosion, deposition by rivers, glaciers, wind, waves) create different types of landforms. The presence and dominance of these processes vary globally.
– **Statement 3 (differential rates of the processes at different places on the Earth’s surface):** Even the same processes operate at different intensities and speeds depending on factors like climate, topography, vegetation cover, etc. For example, river erosion rates vary with rainfall, slope, and rock type. These differential rates result in diverse landforms across the globe.