Which of these statements is correct about p and s seismic waves? (2 points) question 40 options: 1) both p and s waves travel along earth's surface and their amplitude decreases with depth into earth. 2) both p and s waves travel with the same speed through earth and their amplitude increases with time. 3) p waves are radiated along a single direction but s waves are radiated along all directions. 4) p waves change the volume of the medium through which they travel but s waves do not change the volume of the medium