How do P waves and S waves travel through the Earth?
The speed of P waves and S waves increases as they travel deeper into the Earth’s mantle . They travel through the Earth in curved paths, but they change direction suddenly when they pass through the boundary between substances in different states.
Where do P waves travel through?
In a P wave, the rock particles are alternately squished together and pulled apart (called compressions and dilatations), so P waves are also called compressional waves. These waves can travel through solids, liquids, and gases. P waves can travel through the liquid outer core.
In what directions do the s/p and surface waves move?
P waves can travel through solids, liquids, and even gases. S waves shake the ground in a shearing, or crosswise, motion that is perpendicular to the direction of travel. These are the shake waves that move the ground up and down or from side to side.
What effects do P and S waves have at the surface?
Except in the most powerful earthquakes they generally do not cause much damage. P-waves shake the ground in the direction they are propagating, while S-waves shake perpendicularly or transverse to the direction of propagation (i.e. they displace material at right angles to their path).
What is difference between P and S waves?
Wave Speeds P waves travel faster than S waves, and are the first waves recorded by a seismograph in the event of a disturbance. The S waves are the second wave to reach a seismic station measuring a disturbance. The difference in arrival times helps geologists determine the location of the earthquake.
What do P and S waves stand for?
Compressional waves are also called P-Waves, (P stands for “primary”) because they are always the first to arrive. Shear waves propagate more slowly through the Earth than compressional waves and arrive second, hence their name S- or secondary waves. They were responsible for the second rumble.
Why didn’t the P waves arrive in each city at the same time?
Answer Expert Verified Since each city has a different distance from the epicenter, the p-waves will arrive at different times.
What are the 4 types of seismic waves?
Seismic Wave Motions—4 waves animated
- Body Waves – Primary (P) & Secondary (S) Waves.
- Surface Waves – Rayleigh & Love Waves.
Which is more dangerous P or S waves?
S waves are more dangerous than P waves because they have greater amplitude and produce vertical and horizontal motion of the ground surface. The slowest waves, surface waves, arrive last. They travel only along the surface of the Earth. There are two types of surface waves: Love and Rayleigh waves.
What type of waves cause the most damage?
There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids. Surface waves are the slowest, but they do the most damage in an earthquake.
What is the most dangerous type of earthquake?
Could an earthquake destroy the world?
By definition an earthquake cannot destroy the earth because an earthquake is the result of stresses in the crust.
Will California fall into the ocean?
No, California is not going to fall into the ocean. California is firmly planted on the top of the earth’s crust in a location where it spans two tectonic plates. There is nowhere for California to fall, however, Los Angeles and San Francisco will one day be adjacent to one another!
How big of an earthquake would destroy the earth?
|Magnitude||Earthquake Effects||Estimated Number Each Year|
|6.1 to 6.9||May cause a lot of damage in very populated areas.||100|
|7.0 to 7.9||Major earthquake. Serious damage.||20|
|8.0 or greater||Great earthquake. Can totally destroy communities near the epicenter.||One every 5 to 10 years|
How long would a 9.0 earthquake last?
About 15 to 20 minutes
What’s the longest earthquake recorded?
What state has the most earthquakes 2020?