GEOLOGY

Detailed explanation-1: -Of the two types of surface waves, the L-waves are the most destructive.

Detailed explanation-2: -It is the surface waves which cause most property damage because surface waves produce more ground movement and travel more slowly, so they take longer to pass.

Detailed explanation-3: -P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.

Detailed explanation-4: -Surface waves moves rock particles in a rolling and swaying motion, so that the earth moves in different directions. ➢ These are the slowest moving waves, but are the most destructive for structures on earth.

Detailed explanation-5: -Surface waves, they are the last to reach the seismic station and they travel along the earth’s surface. S waves, second to reach the seismic station and they travel through the earth’s interior. Surface waves are the most destructive of these three.