EARTH SCIENCE
TECTONICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The theory of plate tectonics explains how continental movements could occur.
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The theory of plate tectonics shows that continental movements could not have happened.
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The theory of plate tectonics tells exactly where the continents were before Pangaea divided.
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The theory of plate tectonics shows that Pangaea was impossible, but the continents did move.
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Detailed explanation-1: -The correct answer for the given question is: The theory of plate tectonics gives the method by which continents can move as part of plates (option B). Plate tectonics refers to the segment of the earth’s crust that is divided into continental and oceanic crusts based on density.
Detailed explanation-2: -In the early 20th century, a scientific theory called continental drift was proposed about this migration of the continents. That theory was initially ridiculed, but it paved the way for another theory called plate tectonics that scientists have now accepted to explain how Earth’s continents move.
Detailed explanation-3: -The Earth’s surface is active according to tectonic theory, moving as much as 1-2 inches a year. The many tectonic plates shift and interact all the time. This motion reshapes the Earth’s outer layer. Earthquakes, volcanoes and mountains are the result of this process.
Detailed explanation-4: -Continental drift over millions of years was caused by plate tectonics. And plate tectonics also explained how the movement of the plates create volcanoes and earthquakes, and how the collision between continents gave rise to huge mountain ranges.
Detailed explanation-5: -Continental Drift Theory had been proposed by Alfred Wegener (1912) and F. B. Taylor (1908). Hence, Statement 1 is correct. As per this theory the earth crust was once made of two parts: Pangaea (unified form of all the landmasses), and Panthalassa (huge water body surrounding Pangaea).