Question

Explain the theory of plate tectonics in point wise

Answer 1

1. The earth scientists have attempted to explain the formation of the physical features with the help of some theories based on certain evidences and one such credible theory is the Theory of Plate Tectonics.

2. According to this theory the earth's crust is formed out of 7 major and some minor lithospheric plates.

3. This scientific theory describes the large-scale movement of the plates which results in the building up of stresses within the plates and the continental rocks above, leading to folding, faulting and volcanic activity. The movement of these plates has changed the position and size of the continents over millions of years and has also influenced the evolution of the present landform features.

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Answer 2

Answer:

A long form 5 marks answer for the theory of plate tectonics:

Explanation:

• the entire lithosphere is not  a single unbroken or composite plate;Rather there are  series of bigger and smaller plates.
• Continents form  only part of the plates and the surrounding oceans form  the rest of the plates.
• These plates are like the giant  rafts float or move continuously relative to one another  on the surface of asthenosphere at the rate of 5-10cm during a year.
• These plates are separated by cracks or  fissures or faults which are the areas of disturbance. These fissures or faults mark the boundary between the  plates.
• The earth scientists have attempted to explain the formation of the physical features with the help of some theories based on certain evidences and one such credible theory is the Theory of Plate Tectonics.
• According to this theory the earth's crust is formed out of 7 major and some minor lithospheric plates.
• This scientific theory describes the large-scale movement of the plates which results in the building up of stresses within the plates and the continental rocks above, leading to folding, faulting and volcanic activity. The movement of these plates has changed the position and size of the continents over millions of years and has also influenced the evolution of the present landform features.