Question

multiple choice question
which seismic waves cause particles inside earth to move perpendicular to the direction that the wave is traveling?
o surface waves
o secondary waves
o primary waves
o ground waves

Explanation:

Primary waves (\(P -\) waves) are compressional waves where particle motion is parallel to the wave - travel direction. Secondary waves (\(S -\) waves) are shear waves, and the particle motion is perpendicular to the wave - travel direction. Surface waves have more complex particle - motion patterns (like rolling or shaking near the surface). Ground waves is a less - specific and not the standard term in this context for the wave type with particle motion perpendicular to wave direction.

Answer:

secondary waves