Question

H. Scientists found that the travel time of earthquake waves differ greatly from predicted travel times if the Earth were of (Blank) composition.

please help i am so confused with this answer

Answer 1

Answer: The correct answer is likely dense

Step-by-step explanation:

Seismic waves from earthquakes have been proven to travel more quickly through denser materials, therefore traveling quicker as the depth increases. Since the earth's mantle is more rigid and compressible as the asthenosphere increases, P-waves travel faster as they go deeper into the mantle.