Estimate, to the nearest tenth of a minute, the times that P-waves and S-waves firstarrived at each recording station (seismogra
ph location) in Figure 4. Then, subtract Pfrom S to get the S-minus-P time interval: First P arrival First S arrival S-minus-P
Sitka, AK_______________________________
Charlotte, NC_______________________________
Honolulu, HI_______________________________
P waves can travel through liquid and solids and gases, while Swaves only travel through solids. Scientists use this information to help them determine the structure of Earth.
S waves have a larger amplitude than P waves and cause the ground's surface to move both vertically and horizontally, making them more dangerous. Surface waves, which move slowly, are the last to arrive. P waves leave the earthquake first and go the furthest. Rock oscillates perpendicular to the direction of wave propagation in S or shear waves. In rock, S waves typically move at a pace of roughly 60% that of P waves, and they always come after the latter. Points of solid media move back and forth perpendicular to the wave's direction of propagation due to S waves, also known as shear or transverse waves. As the wave passes, the medium is sheared first in one direction and then in the opposite direction.
To learn more about P-waves and S-waves click the link below:
The amount of heat they are exposed to has a lot to do with the inferences and observations that they make on the density of the earth's core. The inner core is the most compact due to the fact that they have a lot of direct exposure to heat and the gravity of the earth pressung down on it. The inner core is less subjected to those conditions.
