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Divergence of Plates at Mid-Ocean Ridge
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1

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Tension in the continental crust along a newly forming rift zone produces which topographic feature?
A)sink holes
B)thrust faults
C)high mountains
D)fault valleys
E)coral reefs
2
Where does the lava erupted into active rift zones originate in the Earth?
A)in the upper mantle
B)in the lower mantle
C)in the outer core
D)in the crust of the continent
E)in the mesosphere
3
Intermittent invasion of a newly formed continental rift by the sea leads to the formation of which type of rock?
A)deposits of evaporite salts
B)extrusions of volcanic basalt
C)plutons of granite
D)deposits of black shale
E)deposits of conglomerate
4
Cooling seafloor subsides and pulls down on the attached continental margin, creating which topographic feature on the adjacent continents?
A)rift valley
B)volcano
C)continental shelf
D)interior lowland
E)fault blocks
5
Where is the youngest rock located in the ocean floor of a diverging plate boundary?
A)at the mid-ocean ridge
B)adjacent to the continents
C)at the bottom of the rift valleys
D)midway between the continents and the mid-ocean ridge
E)adjacent to the mid-ocean ridge





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