Seismic waves are the type of waves generated by an earthquake. These waves travel through the Earth and are responsible for the shaking and ground motion associated with earthquakes. There are different types of seismic waves, including P-waves, S-waves, and surface waves.
Primary (P) waves, also known as compressional waves, travel through matter with a push-pull motion. These waves are the fastest seismic waves and can travel through solids, liquids, and gases.
First P waves, seismic waves that compress and expand the ground like an accordion. Then S waves, seismic waves that vibrate from side to side as well as up and down. And finally Surface waves, they move more slowly than P waves and S waves. But they can produce severe ground movements.
Rayleigh waves are surface seismic waves that travel along the Earth's surface, characterized by a rolling motion that causes both vertical and horizontal ground displacement. They typically have a longer wavelength than other seismic waves, such as P-waves and S-waves, and are responsible for most of the shaking felt during an earthquake. Rayleigh waves tend to cause significant damage due to their ability to propagate over long distances and their complex motion, which can disrupt structures. Their speed is slower than that of P-waves and S-waves, making them the last to arrive at a seismic station.
Seismic waves occur when there is an earthquake.
p - these are also the fastest
Transverse waves have particle motion perpendicular to the direction of wave travel. Examples include light waves, water waves, and seismic S-waves.
Scientists use characteristics such as wave velocity, propagation mode, and direction of particle motion to classify seismic waves. These properties help differentiate between the different types of waves produced by earthquakes and other seismic events.
P-waves, or Primary waves, are seismic waves that move in a push-pull motion. They are the fastest seismic waves and can travel through solids, liquids, and gases.
Longitudinal waves exhibit propagation and particle motion in the same direction. In these waves, the particles oscillate parallel to the direction of the wave travel, creating compressions and rarefactions. Examples include sound waves in air and seismic waves in the Earth.
secondary waves.......... i think
secondary waves.......... i think
seismic
P-waves, or primary waves, are a type of seismic wave that travel through solids, liquids, and gases. They are longitudinal waves, meaning that the particle motion is parallel to the direction of wave propagation. Therefore, P-waves cannot vibrate at 90 degrees to the wave motion; that characteristic is typical of S-waves (shear waves), which are transverse waves.
The particle motion in shear waves relative to the energy of the wave is downward.
A seismograph is commonly used to measure the particle motion of a substance, particularly in the context of studying earthquakes and ground vibrations. It records the movement of the ground and can provide valuable data about the intensity and characteristics of the seismic waves.
Seismic waves affect us because they are what causes the motion from an earthquake that destroy buildings and such. The three types of seismic waves are surface waves primary waves also called P-waves and secondary waves also called S-waves.