At a divergent boundary between spreading tectonic plates in oceanic crust:
A) one plate subducts beneath the other.
B) rock and magma rise to form the Mid-Oceanic Ridge.
C) rock sinks to form an oceanic trench.
D) rock rises to form continents.
Correct Answer:
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Q21: Where two plates carrying continental crust converge,
Q22: A mantle plume is a _.
A) convergent
Q23: Magnetic orientation in rocks that is opposite
Q24: The Earth's outer core is:
A) cool and
Q25: The outer 75 to 125 kilometers of
Q27: The first supercontinent formed by collisions of
Q28: The asthenosphere is:
A) hot, weak, and plastic.
B)
Q29: Continental crust is composed mainly of:
A) granite.
B)
Q31: The lithosphere is:
A) hot, plastic, but solid
Q33: When a plate carrying continental crust converges
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