The upper mantle can be divided into two portions,the
A) asthenosphere (lower zone of the upper mantle) and part of the lithosphere (the top zone of the upper mantle) .
B) asthenosphere (top zone of the upper mantle) and the lithosphere (the lower upper mantle) .
C) Moho and the lithosphere.
D) continental mantle and the oceanic mantle.
Correct Answer:
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Q25: Earth's magnetic field is not stable; throughout
Q26: The Mohorovicic discontinuity was discovered by observing
A)earthquake
Q27: The thickness of Earth's crust
A)varies from 10
Q28: Because S-waves do not travel through Earth's
Q29: The outer core is
A)rock.
B)plastic.
C)liquid.
D)the source for volcanoes.
Q31: The Earth's magnetic field is attributed to
Q32: Evidence to support the fact that Earth's
Q33: The lithosphere rides on top of the
Q34: We can say that Earth's crust floats
Q35: P-waves travel faster through the inner core
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