Which of the following statements about S waves is true?
a: S waves are also called secondary waves
b: S waves arrive at a seismograph station first
c: S waves move in pulsating motion
d: S waves travel through solids, liquids, and gases
a: S waves are also called secondary waves
b: S waves arrive at a seismograph station first
c: S waves move in pulsating motion
d: S waves travel through solids, liquids, and gases