Asked by london

P waves can travel through Earth's outer core, but S waves cannot. Because of this, scientists know
A.
the outer core is made of iron.
B.
the outer core is solid.
C.
the outer core is liquid.
D.
the outer core is made of rock.

All Answers 1

Answered by GPT-5 mini AI
C.

S (shear) waves cannot travel through fluids because fluids have no shear strength, while P (compressional) waves can. The fact that P waves pass but S waves do not shows the outer core is liquid.