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An area where no direct seismic waves from a particular earthquake can be detected?
shadow zone
What does the shadow zone have to do with earthquakes?
This is caused by the density variations in the earth which cause the velocity of seismic waves to change as they move between them which in turn causes refraction of the waves. Further to this, the earth's outer core is a liquid which prevents seismic S-waves from travelling through it. This leads to a zone on the opposite side of the earth from an earthquake where S-waves are not detected.
The shadow zone is caused by what waves as they travel through Earth?
refraction
What is the area of the earth that is unaffected by both P S waves?
The shadow zone
Why would the shadow zone of an earthquake in japan be different from the shadow zone of an earthquake in California?
depends on the focus and epicenter depends on the focus and epicenter
What is the band around the earth were seismic waves are not detected?
Shadow Zone
What is the band around the earth where seismic waves are not detected?
Shadow Zone
An area where no direct seismic waves from a particular earthquake can be detected?
shadow zone
Why no seismic waves detected at the shadow zone?
In shadow zone, seismograph does not record signals. For P-wave it is b/w 104-145 degress.These earthquake waves exhibit same properties as other waves like reflection, refraction etc.As core has denser matter so P-waves will bend inward and hences they will form a shadow zone. S-waves don't pass through liquid phase, core. So, shadow zone is larger here.
Which area of earth is unaffected by both p and s waves?
The Crust of the Earth
Where are there no P waves or S waves?
Shadow zone
Why do S waves not come to the surface beyond the shadow zone?
S waves dont even reach the shadow zone because they are unable to penetrate the outer core. They are basically stopped by the shadow zone.
What does the shadow zone have to do with earthquakes?
This is caused by the density variations in the earth which cause the velocity of seismic waves to change as they move between them which in turn causes refraction of the waves. Further to this, the earth's outer core is a liquid which prevents seismic S-waves from travelling through it. This leads to a zone on the opposite side of the earth from an earthquake where S-waves are not detected.
What is the p-waves shadow zone?
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Why do shadow zones exist?
P-waves refract as they travel through Earth so do not rach all other pars of the earth's surface. Also S-waves can't travel through liquids and so can't pass through the earth's outer core which also causes a shadow zone.
What is the area where no seismic waves are detected called?
It is called the shadow zone, an area at an angle of between 104° and 140° from the axis of the epicenter, where the earth's liquid outer core has refracted the P-waves away from the direct line of travel.
What is the wide belt in which no seismic waves are received?
shadow zone
