As seismic waves travel through Earth's interior, they bend and refract as a result of different densities of material they pass through.

Question

Quizplus · Accepted Answer

This is true. Seismic waves change speed and direction as they encounter different materials in Earth's interior, and this leads to refraction and bending of their paths. This is one of the key ways that we study the structure and composition of Earth's interior.

As Seismic Waves Travel Through Earth's Interior, They Bend and Refract