Differential movement on faults has produced uplifted blocks called ____ and down-dropped blocks called ____.
A)domes; basins
B)strike faults; dip faults
C)dip faults; strike faults
D)grabens; horsts
E)horsts; grabens
Question 2
What statement most accurately describes the theory of seafloor spreading?
A)Subduction zones produce oceanic crust that moves away from these zones by seafloor spreading toward mid-oceanic ridges where it is consumed.
B)Oceanic crust continuously forms across the seafloor and is moved by subduction zones toward mid-oceanic ridges where it is consumed.
C)Oceanic crust continuously forms at mid-oceanic ridges, moves away from these ridges by seafloor spreading, and is consumed at subduction zones.
D)Earth's molten core material erupts at mid-oceanic ridges, moves away from these ridges by seafloor spreading, and is consumed at subduction zones.
E)Subduction zones force oceanic crust to spread across the seafloor before being consumed at a fault valley.
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Confining Pressure and Differential Stress