Topic: Salient features of world’s physical geography;
1. Compare and contrast, the continental drift theory, sea floor spreading theory and the plate tectonics theory. (250 words)
Reference: NCERT Book For Class XI: Fundamentals of Physical Geography.
Why the question:
The question is part of the static syllabus of General studies paper – 1.
Key Demand of the question:
To write about the differences as well as similarities between most important theories that tried to explain the plate tectonics.
Compare and contrast – provide for a detailed comparison of the two types, their features that are similar as well as different. One must provide for detailed assessment of the two.
Structure of the answer:
Write about plate tectonics and the movement of continents and various theories put forward to explain them.
This is a very straightforward question and to answer it, drawing a table would be apt in order to compare and contrast the theories.
Bring out differences in the continental drift theory, sea floor spreading theory and the plate tectonics theory on the following parameters such as Authors of the theory, what the theory explains, forces it considers for the movement, supporting evidences it considers, critique of theory if any and its acceptance among scientists etc.
Mention about general importance of the theories and conclude your answer.