Moving into the core,P-wave velocities gradually increase until a positive jump is reached at about a 5150-km depth,suggesting that the inner core is solid.
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Q4: The point where a fault first ruptures
Q5: P- and S-waves do not follow simple
Q6: The shallower the hypocenter,the more P- and
Q7: The biggest shaking event is called "the
Q8: Transform faults usually link spreading centers or
Q10: The Earth's interior is homogeneous.
Q11: In igneous rocks such as granite,S-waves travel
Q12: Following the paths of P- and S-waves
Q13: Aftershocks are smaller than the main shock
Q14: Normal faulting occurs when the hanging wall
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