The movement of tectonic plates.
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P waves
The fastest seismic waves, P-waves, will arrive first at a seismograph station after an earthquake. P-waves are compressional waves that can travel through both solids and liquids, allowing them to arrive at a station before the slower S-waves and surface waves.
Earthquake P-waves don't travel in straight lines, they travel in like a circle after the earthquake has struck. These P-waves arrive first during an earthquake.
No, surface waves are not the first to arrive at a seismic facility. In an earthquake, primary waves (P-waves) are the fastest seismic waves and arrive first. They are followed by secondary waves (S-waves), and then surface waves, which usually arrive last and can cause the most damage due to their larger amplitudes.
Earthquake waves arrive at seismic stations in a specific order: first, the primary waves (P-waves) arrive, which are compressional waves that travel fastest through the Earth. Next, secondary waves (S-waves) arrive, which are shear waves and travel slower than P-waves. Finally, surface waves, which travel along the Earth's surface and typically cause the most damage, arrive last. This sequence helps seismologists determine the location and magnitude of an earthquake.
A Pwave is the first wave to arrive during an earthquake, P waves compress and then expand. They can damage buildings.
A seismometer detects primary waves (P-waves) first. These are the fastest seismic waves and are the first to arrive at a seismometer after an earthquake.
P waves (APEX)
The first shock wave of an earthquake is known as the P-wave or primary wave. It is the fastest seismic wave and can travel through both solid and liquid materials. P-waves are responsible for the initial jolt felt during an earthquake.
I don't know ok
The P-wave generally arrives before the S-wave during an earthquake. The time difference between them can help determine the distance to the earthquake's epicenter. In this case, if the S-wave arrived 11 minutes after the earthquake, you would need to calculate the time difference between the arrival of the P-wave and the S-wave to determine how long after the P-wave arrival the S-wave arrived.
They used earthquake waves.