A considerable variation in seismic wave velocity in the crust occurs because

Question

Quizplus · Accepted Answer

Different types of rocks in the crust have varying physical properties, such as density, hardness, and porosity, which affect the speed at which seismic waves travel through them. As a result, seismic wave velocity varies depending on the types and distribution of rocks in the crust. Choices B, C, and D are incorrect because they do not reflect the main reason for the variation in seismic wave velocity in the crust.

A Considerable Variation in Seismic Wave Velocity in the Crust