Question

Difference between P - Waves and S - waves?​

Answer 1

Answer:

P waves

P waves, or Primary waves, are the first waves to arrive at a seismograph. P waves are the fastest seismic waves and can move through solid, liquid, or gas. They leave behind a trail of compressions and rarefactions on the medium they move through. P waves are also called pressure waves for this reason. Certain animals, such as dogs, can feel the P waves much before an earthquake hits the crust (surface waves arrive). Humans can only feel the ramifications it has on the crust.

S waves

S waves, or secondary waves, are the second waves to arrive during an earthquake. They are much slower than P waves and can travel only through solids. It is after studying the trajectory of S waves through the layers of earth, scientists were able to conclude that the earth’s outer core is liquid.

Following is the table explaining concepts related to waves:

Difference Between Longitudinal and Transverse Wave

Types of Waves

Difference between s waves and p waves

P waves S waves

The first wave to hit seismographs Second waves to hit seismographs

They are compression waves They are shear waves

Can move through solids and liquids Can only move through solids

Shake the medium in the direction in which they are propagating Shake the medium in the direction perpendicular to which they are moving

P Wave And S Wave Formula

Following is the table for P and S waves formula based on the velocity of P and S waves:

P wave α2=λ+2μρ

S wave β2=μρ

Following is the table for P and S waves formula based on the distance between the earthquake location and the location of the seismic station:

Local earthquakes with epicenter distance up to 0-500 km d=t(S-P).8

Regional earthquakes with epicenter distance up to 1000 km d=t(S-P).10

Notations Used In The P And S Waves Formula

⍴ is the density through which the wave propagates

is the shear modulus

Λ is the first Lame parameter

Explanation:

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Answer 2

Answer:

Explanation:

P waves

P waves, or Primary waves, are the first waves to arrive at a seismograph. P waves are the fastest seismic waves and can move through solid, liquid, or gas. They leave behind a trail of compressions and rarefactions on the medium they move through. P waves are also called pressure waves for this reason. Certain animals, such as dogs, can feel the P waves much before an earthquake hits the crust (surface waves arrive). Humans can only feel the ramifications it has on the crust.

S waves

S waves, or secondary waves, are the second waves to arrive during an earthquake. They are much slower than P waves and can travel only through solids. It is after studying the trajectory of S waves through the layers of earth, scientists were able to conclude that the earth’s outer core is liquid.