Question

Explain the type of seismic waves

Answer 1

Earthquakes generate three types of seismic waves: P (primary) waves, S (secondary) waves and surface waves, which arrive at seismic recording stations one after another. Both P and S waves penetrate the interior of the Earth while surface waves do not. Due to this, P and S waves are known as "body waves". Surface waves arrive last and are the least interesting to seismic tomographers because they don't penetrate deep inside the Earth, therfore provide little information about inacessible terrain.

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Answer 2

The types of seismic waves are body waves and surface waves and body waves can travel through the earth's inner layers but surface waves can only move along the surface of the planet like ripples on water and earthquakes radiate seismic energy as both body and surface waves.