If a seismic wave is refracted upward at a boundary,what can be said about the material through which the wave is traveling?
A)The wave is moving through two materials of the same velocity.
B)The wave is moving from a faster material into a slower material.
C)The wave is moving from a slower material into a faster material.
D)The wave is traveling through a molten magma chamber.

Question

Quizplus · Accepted Answer

When a seismic wave is refracted upward at a boundary, it means it is moving from a slower material into a faster material. This is because the wave is bent away from the normal, which is a line perpendicular to the boundary, indicating that the wave is entering a medium where its velocity increases.

If a Seismic Wave Is Refracted Upward at a Boundary,what