Bending the Truth

If P-waves (sound waves) travel in straight lines then why are the lines depicting their paths through the interior of the Earth curved in the popular science interpretation of data from seismic waves (SciPop)?

March 1st

In the atheist human origins narrative (SciPop) there's no hell, or a great gulf of open space inside the Earth, because it's trying to be a logical antidote to guilt, the fear of judgment, and eternal torment.