The seismic waves that shake the ground in a vertical fashion are
A) primary waves.
B) secondary waves.
C) Mercalli waves.
D) Richter waves.
E) Wegener waves.

Question

Quizplus · Accepted Answer

Secondary waves, also known as S-waves, move in a perpendicular, or up-and-down motion, causing the ground to shake vertically. Primary waves, or P-waves, move in a push-and-pull motion and do not cause vertical shaking. Mercalli and Richter waves do not exist, and Wegener waves are not related to seismic activity.

The Seismic Waves That Shake the Ground in a Vertical