What kind of waves are P and S waves? A) surface waves B) ...

[serike]

What kind of waves are P and S waves?
 
  A) surface waves
  B) interior waves
  C) body waves
  D) sound waves

Question 2

What is one additional approach, besides the study of the baseball, that geologists use to gain knowledge about Earth's interior?
 
  A) Geologists infer the interior composition at deep levels from calculations of Earth's density.
  B) Geologists collect and study data from volcanoes, mainly about the lava, to gain knowledge about the interior.
  C) Geologists use energy from earthquakes to construct images of Earth's interior.
  D) Geologists go as far into the center of the earth as possible by exploring in drilled boreholes and mines, going as deep as possible.

[okolip]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: A, C