Anukruti posted an Question
January 17, 2021 • 22:02 pm 30 points
  • IIT JAM
  • Geology (GG)

The inner core is ____(more/less)rigid than lower mantle and has___(larger/smaller)seismic velocities than lower mantle

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    Saurabh 1

    Inner core is surely more rigid than lower mantle because of the extreme pressure conditions ranging in 250-350 GPa, which is itself explanatory about the solid nature of the inner core. But the velocity of seismic wave(probably here I'm talking about p wave) is less than that of lower mantle(velocity in lower mantle reaches upto 13 km/s while it drops down to 11km/s in inner core.

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    Sajan sarthak Best Answer

    The inner core is more rigid than lower mantle and has lower seismic velocities than lower mantle. GREEN LINE IS VELOCITY. RED LINE IS DENSITY.

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