Evidence to support that the inner core is solid and the outer core is liquid comes from
A)refraction of seismic waves as they encounter different mediums.
B)the wave shadow effect of P- and S-waves as they encounter the solid and liquid core.
C)the wave shadow effect of P- and S-waves,and the increase in velocity of P-waves as they encounter the solid inner core.
D)the inner core is not solid,but is liquid.

Question

Quizplus · Accepted Answer

The wave shadow effect of P- and S-waves and the increase in velocity of P-waves as they encounter the solid inner core provide evidence that the inner core is solid and the outer core is liquid. Refraction of seismic waves as they encounter different mediums may also provide evidence, but it is not the most direct evidence for determining the state of the inner and outer core. Choice D is incorrect as it contradicts the commonly accepted idea that the inner core is solid.

Evidence to Support That the Inner Core Is Solid and the Outer