Final answer:
S-waves travel slower than P-waves and cannot travel through liquids.
Step-by-step explanation:
S-waves travel slower than P-waves; however, unlike P-waves, they cannot travel through liquids. This is because S-waves are transverse waves, which means they oscillate perpendicular to the direction of wave propagation. Liquids, like water, do not have the necessary rigidity to support perpendicular oscillations, so S-waves cannot travel through them. P-waves, on the other hand, are longitudinal waves, which means they oscillate parallel to the direction of wave propagation and can travel through both solids and liquids.