Basic difference between the drift theory and Plate tectonics ~ Civil Services Self Study

Question:

Bring about the basic difference between the drift theory and Plate tectonics.

Answer:

The following are the major difference between the drift theory and plate tectonics:

Drift theory was given by Alfred Wegener in 1912 whereas Plate tectonics was given by Mckenzie, Parker, and Morgan in 1967.
In the drift theory, it was believed that the continents move whereas, in the plate tectonics theory, it was believed that continents are part of the plate and a plate moves.
In the drift theory, Wegener believed that all the continents were initially part of a supercontinent called Pangea whereas, In plate tectonics theory, it was believed that all the plates moved in the geological past and Pangea was the result of the convergence of all plates.

Wegener believed that forces of continental drift are pole fleeing and tidal force whereas Plate tectonics theory believed that the force of plate movement is convectional current inside the mantle.

Try to solve the following questions:

What is plate tectonics? how do plate movements transform the earth's crust? ( 25 Marks, 66th BPSC geography Optional Paper)
Bring about the basic difference between the drift theory and Plate tectonics. (UPPSC)
Critically examine plate tectonics and explain its relation to the evolution of major landform features on the surface of the earth. ( BPSC, 2019)
Describe the concept of plate tectonics and explain the effects of the collision of two similar and two dissimilar plates. ( UPPSC 2020)
State the concept of plate tectonics. How does it help in explaining the formation of the Himalayas and the Appalachian Mountains? (UPSC 2014, 250 words, 20 marks)

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