GENERAL KNOWLEDGE

GK

WORLD GEOGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The modern theory of plate tectonics states
A
the creation of oceanic crust and the drifting of continents
B
the convention currents within the earth’s mantle cause the creation of new oceanic crust at the mid oceanic ridges
C
that the oceanic crust is destroyed at areas where this crust type becomes subducted under the lighter continental crust
D
All of the above
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Plate tectonics is the theory that states that Earth’s outer shell is divided into several plates that glide over the mantle. The plates act like a hard and rigid shell compared to Earth’s mantle. This strong outer layer is called the lithosphere. Plate tectonics is the modern version of continental drift.

Detailed explanation-3: -Subduction Zones. Accreted Terranes. Collisional Mountain Ranges. 11-Feb-2020

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