Question

Primary seismic wave and secondary seismic wave distinguish between​

Answer 1

Answer:

The major differences between P waves and S waves include wave speeds, wave types, travel capabilities, and wave sizes. Primary waves travel faster, move in a push-pull pattern, travel through solids, liquids and gases, and cause less damage due to their smaller size. Secondary waves travel slower, move in an up-and-down pattern, travel only through solids, and cause more damage due to their greater size.

Answer 2

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Primary or P waves : These are the first ones to reach the surface of the earth after the energy is emitted in the earths interior. They travel at a very fast speed from the focus of the earthquake in radial direction. Subjected to a P wave, particles in the rock move in the direction of waves to and fro. The wave moves to and fro, therefore these waves are also called forward-backward waves. These waves can travel through all the three states - liquid, solid and gaseous. But while travelling through liquid medium, their direction gets changed.

Secondary or S waves : The waves which reach the earths surface after the primary waves are called secondary waves. These waves also scatter in all directions from the focus of the earthquake. Their velocity is lesser than the P waves. The particles lying in the way of these waves move up and down in the direction of energy transfer. These waves can travel only through the solid medium. They get absorbed as they enter the liquid medium.