16. Which layers are the youngest ; near ocean basin ocean ridges edges of ocean

Question

16. Which layers are the youngest

;

near ocean basin

ocean ridges

edges of ocean basins

all of the above

17. Which represents the correct order of Earth’s layers from exterior to interior surface of Earth

Lithosphere, asthenosphere, mesospheric mantle, outer core and the inner core

asthenosphere , lithosphere, mesospheric mantle, outer core and the inner core

Lithosphere, asthenosphere, mesospheric mantle, inner core and the outer core

Lithosphere, asthenosphere, outer core, mesospheric mantle and the inner core

19. Which deformation is recoverable

;

elastic

ductile

brittle

none of the above

20. Isostasy is based on

;

principle of convergence

buoyancy principle

principle of divergence

principle of magnetization

21. The greatest earthquakes in the world occur _____________.

;

where plates collide with each other

where plates separate from one another

where plates slide past each other

in the interiors of individual plates

;

near ocean basin

ocean ridges

edges of ocean basins

all of the above

Explanation / Answer

17)

option A)Lithosphere, asthenosphere, mesospheric mantle, outer core and the inner core

reason : lithosphere is the top layer on earth which consists of land

the upper layer of the earth's mantle, below the lithosphere, is asthenosphere

next comes the mesospheric mantle after that outer core and at last inner core

19) option A) elastic

reason : elastic deformation is a temporary shape change that is self-reversing after the force is removed

20) option C) buoyancy principle

Reason : isostacy is the  state of gravitational equilibrium between Earth's crust and mantle such that the crust floats at an elevation

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