2007-09-22 11:19:51 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
During an eaithquake away from vibrations called seismic waves move out from the focus in all directions.
2007-09-22 11:24:47 · answer #1 · answered by teresa n 1 · 0⤊ 0⤋
Any sudden movement will create wave formations. It may move air ,water or sand or rocks. The sudden release of energy by tectonic plates at its boundary during earthquakes generates different types of waves that travel with different characters and speed. These waves generated by earthquakes are called seismic waves. please read the behaviours.
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.
2007-09-23 08:13:42 · answer #2 · answered by A.Ganapathy India 7 · 0⤊ 0⤋
movement of the earth due to earthquakes
2007-09-25 13:13:51 · answer #3 · answered by Loren S 7 · 0⤊ 0⤋