what is p and s waves?

Answer 1

P wave is the primary wave. Generated from the point called focus. The speed of this wave is from 13 to 17 kilo meters per second. Moves the particles in its direction of propagation. you can assume that this is non destructive wave. The secondary waves comes from the point of focus. The speed is nearly half of the primary wave. This moves the particles perpendicular to the direction of its propagation. Destructive.Do not pass through liquid. These waves are called body waves. generated from earthquakes. The L wave and R waves are most dangerous waves coming from the surface of the earth. These waves are coming because of reflection and refraction.These are called surface waves. The speed is slower than other two waves.

Answer 2

the motion of P and S waves generated by a single earthquake. The waves spread through the planet in a series of expanding spheres. Some of the wave energy reflects off the boundary between the mantle and core.

Scientists deduced the structure of Earth's interior and how waves move through it by analyzing thousands of earthquakes recorded at Earth's surface. Examine how the waves change as they encounter different layers of Earth's interior. Identify areas on the surface that do not receive any waves — these areas are in the shadow zone of this simulated earthquake.

Answer 3

P waves move in a compressional motion similar to the motion of a slinky, while S waves move in a shear motion similar to whipping a rope.