S waves travel only through solids, they are known as shear waves and their motion is perpendicular to the direction of travel.
If the direction of motion is to the right, the wave would move up and down.
P waves an move through both solids and liquids, their motion is parallel to the direction of travel.
If the motion is to the right the wave will compress and decompress towards the right.
An earthquake is caused due to tension between the earth's plates. This causes the release of seismic waves. There are 2 types of seismic waves - P Waves and S waves. P waves arrive first and travel back and front towards the direction of the wave and travel through liquids. They are twice as fast as S waves. So, P waves arrive first in an earthquake. The amount of seconds between the P waves and S waves can be used to tell how far the epicentre is. Every second accounts for 8 km of distance.
Hope this helps..!! ;)
P-Wave is a Primary Wave. It goes through land and water.
S-Wave is a Secondary Wave. It only goes through land.
They are both seismic waves.
Strictly speaking they are both seismic body waves - they ravel through a specific medium rather than along a surface. P-waves are longitudinal / compression waves whereas S-waves are transverse / shear waves.
Because of this P waves can travel through solids, liquids and gasses whereas S-waves can only travel through solids.
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P waves are Primary Waves. They Go front and back. Shear waves go up and down and come next.
P and S waves are body waves.
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As P-waves travel at a higher velocity than S-waves they arrive at a seismometer station before the S-waves. The difference between their arrival time can be used to calculate the distance from the seismometer station to the epicentre.
surface waves
The distance to the epicenter
4,000 kilometers
False. The closer you are to the epicentre, the smaller the time difference between the arrival of P and S-waves.
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As P-waves travel at a higher velocity than S-waves they arrive at a seismometer station before the S-waves. The difference between their arrival time can be used to calculate the distance from the seismometer station to the epicentre.
By finding the arrival time of the P waves and S waves :)
surface waves
The difference in arrival times of P and S waves.
The distance to the epicenter
p waves are normally faster than s waves s waves have trouble sometimes going through solid rock while p waves travel straight through rock.
4,000 kilometers
No. Seismologists (a type of geophysicist) use the difference in the arrival time of P and S waves to estimate the distance from the seismometer station to the epicentre of the earthquake.
The difference between the arrival times increases as the distance from an earthquake epicentre increases as S-waves travel more slowly than P-waves so the greater the distance the further they lag behind.