How do you tell the difference between P and S waves?
Primary waves travel faster, move in a push-pull pattern, travel through solids, liquids and gases, and cause less damage due to their smaller size. Secondary waves travel slower, move in an up-and-down pattern, travel only through solids, and cause more damage due to their greater size.
What does the S wave mean?
depolarisation
What does a large S wave indicate?
A prominent S-wave in lead I is typically present in cases of congenital heart disease, valvular heart disease, and cor pulmonale that cause right ventricular enlargement and fibrosis.
What do S waves do?
It is this property of S waves that led seismologists to conclude that the Earth’s outer core is a liquid. S waves move rock particles up and down, or side-to-side–perpendicular to the direction that the wave is traveling in (the direction of wave propagation). Click here to see a S wave in action.
What is another name for S wave?
In seismology, S waves, secondary waves, or shear waves (sometimes called elastic S waves) are a type of elastic wave and are one of the two main types of elastic body waves, so named because they move through the body of an object, unlike surface waves.
What does S stand for in secondary wave?
An S wave, or shear wave, is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.
Which earthquake waves Cannot pass through liquids?
S-waves cannot travel through liquids. When they reach the surface they cause horizontal shaking. Liquids don’t have any shear strength and so a shear wave cannot propagate through a liquid.
What is the movement of Rayleigh wave?
Rayleigh Waves—surface waves that move in an elliptical motion, producing both a vertical and horizontal component of motion in the direction of wave propagation. Particle motion consists of elliptical motions (generally retrograde elliptical) in the vertical plane and parallel to the direction of propagation.
What is the movement of Love waves?
A Love wave is a surface wave having a horizontal motion that is transverse (or perpendicular) to the direction the wave is traveling.
What are the characteristics that both P-waves and S waves share?
In spite of these differences, P and S waves share two properties: The velocity of P and S waves is directly related (def) to the density of the the rock through which they travel. For example, the velocity for a P wave in granite is 5.5 km/sec; whereas the velocity for a P wave in water is 1.5 km/sec.
What are the characteristic of body waves?
A body wave is a seismic wave that moves through the interior of the earth, as opposed to surface waves that travel near the earth’s surface. P and S waves are body waves. Each type of wave shakes the ground in different ways.
What causes seismic waves to travel in curved paths?
The waves are refracted as they travel through the Earth due to a change in density of the medium. This causes the waves to travel in curved paths. When the waves cross the boundary between two different layers, there is a sudden change in direction due to refraction.