Mar 27, 2016 · P waves P waves travel through solids, liquids, and gases. S waves travel through solids only. L waves travel from focus directly upward to the epicenter.

Dec 18, 2015 · L-waves travels from focus to directly to the epicenter. P-waves and S-waves helped scientist to determine the structure of the earth. For example in the core: At the depth of about #2900# km below the earth's surface, P-waves passing through the earth slow down rapidly and S-waves disappear. These changes in the movement of the two seismic ...