The principle of ___________ governs the rise or subsidence of the crust until the mass is buoyantly balanced so that all parts of the lithosphere are in a floating equilibrium.
Plate Tectonics
Sea floor spreading
Isostasy
Uniformitarianism
The lithosphere of the earth is the __________.
Rigid part
Partially melted part
Completely melted part
Oceanic part
The principle of ___________ given by Alfred Lothar Wegener deals with the supercontinent named Pangea and due to its breakup and movement of landmasses away or towards each other gave us the continents lying at their present position.
Plate Tectonics
Continental Drift
Earth Dynamics
Isostasy
The ________________, are characterized by shallow focus earthquake zones and chains of submerged mountains are densely distributed.
Island arcs
Subduction zones
Transform faults
Mid-oceanic ridges
Hawaiian Island chain is the result of ___________.
Collision of two oceanic plates
Intraplate hot spot activity
Divergence of two oceanic palates
Interplate hot spot activity
The highest point (8850 m) and the lowest point (11035 m) on the earth are the result of two plates ____________ against each other.
Diverging
Converging
Transverse
Both a & b
Majorly crust is composed of _________ elements that constitute the most of the rock-forming minerals.
Iron, Magnesium
Silicon, Oxygen
Silicon, Iron
Aluminium, oxygen
At _______________, a new lithospheric layer is produced as the new molten magma rises up due to the convection cells from the asthenosphere or from core-mantle boundary.
Convergent boundaries
Divergent boundaries
Transform boundaries
Mid-oceanic ridges
The ________________ discontinuity that demarcates between crust and mantle, marks the density and leading to P and S wave velocity differences.
Conrad
Lehmann
Mohorovicic
Gutenberg
The type of plate boundary existed between Indian and Eurasian plate is:
Convergent plate boundary
Transform plate boundary
Divergent plate boundary
Transcurrent plate boundary