Question

The study of how seismic waves change as they travel through Earth has revealed that ___________.

A.P-waves travel more slowly than S-waves through Earth crust

B Seismic waves travel more slowly through the mantle because it is very dense

C.Earth’s outer core is solid because P-waves are not transmitted through this layer

D.Earth’s outer core is liquid because S-waves are not transmitted through this layer

Answer 1

Seismic waves reveal that Earth's outer core is liquid because S-waves are not transmitted through this layer.

Step-by-step explanation:

Seismic waves, generated by earthquakes, are used to study Earth's interior. The study of seismic waves has revealed that P-waves travel more slowly than S-waves through Earth's crust. S-waves are not transmitted through Earth's liquid outer core, indicating that it is a liquid layer. Therefore, the correct answer is D: Earth's outer core is liquid because S-waves are not transmitted through this layer.