Match the seismic wave information with how it helps geologists determine the structure of the Earth.
1) Presence of P-wave shadow zone
2) Presence of S-wave shadow zone
3) P-wave velocity as a function of depth
4) Study of indirect waves
A. This helps determine the depth of the core-mantle boundary and diameter of the core. Some indirect waves of this type reach this area and may also be studied.
B. This helps determine that the outer core is molten, as this type of wave cannot travel through molten material.
C. This shows that rocks tend to become more dense with depth and that there is a dramatic change in material at the core-mantle boundary.
D. Since these waves have reflected off boundaries or changed wave type as they cross a boundary, geologists may learn more about Earth's interior by studying them
