If a seismic wave is refracted upward at a boundary,what can be said about the material the wave is traveling through?
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 implies that the wave is moving from a slower material (such as sediment or rock) into a faster material (such as solid rock or a mineral vein). This change in velocity causes the wave to bend upward. Therefore, option C is the correct answer. Option A is incorrect because if the wave was moving through two materials of the same velocity, the wave would not bend. Option B is incorrect as it is opposite to the correct answer. Option D is also incorrect as there is no information related to the presence of a molten magma chamber.

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