Exame Nacional De Geografia - 12.a Classe Practice Questions - Angola 12th Grade National Examination - Geography (Geografia - 12.a Classe) Exam

Why do seismic S-waves (secondary/shear waves) fail to propagate through the Earth's outer core?

S-waves are transverse shear waves that cannot propagate through liquid media S-waves are longitudinal compressional waves that require empty vacuum to travel The outer core has a temperature below absolute zero, which completely freezes wave velocity The magnetic field of the core reflects all mechanical energy back to the mantle

Correct Answer:

S-waves are transverse shear waves that cannot propagate through liquid media

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