GEOLOGY

EARTH SCIENCE

TECTONICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following helped in the development of the theory of plate tectonics?
A
measuring the depth of oceans near deep-sea trenches
B
detecting magnetic striations on land once covered by glaciers
C
understanding the ways organisms adapted to topographical changes
D
understanding rock formations of a similar age occurring on two separate continents
Explanation: 

Detailed explanation-1: -Theory of Plate Tectonics was established by Alfred Wegener. Fossils and Mountain ranges were his evidences. Alfred Wegener created the idea of continental drift and wrote ‘The Origin of Continents and Oceans’ to support his idea.

Detailed explanation-2: -Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of “continental drift.” Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines (like South America and Africa) look like they fit together like a puzzle.

Detailed explanation-3: -The system of ideas behind plate tectonics theory suggests that Earth’s outer shell (lithosphere) is divided into several plates that glide over the Earth’s rocky inner layer above the soft core (mantle). The plates act like a hard and rigid shell compared to Earth’s mantle.

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