Table of Contents
- 1 What type of wave can shake the ground back and forth?
- 2 What type of wave causes the ground to shake?
- 3 What is the back and forth movement caused by an earthquake?
- 4 What is the cause of the shaking of the ground?
- 5 What type of wave as it rolls moves the ground up and down and forward to backward in the direction that the wave is moving?
- 6 How are S waves and P waves similar they shake the ground?
- 7 When does an earthquake have a foreshock It is called?
- 8 How does the size of the fault affect the magnitude of an earthquake?
What type of wave can shake the ground back and forth?
There are two types of surface waves: Love and Rayleigh waves. Love waves move back and forth horizontally. Rayleigh waves cause both vertical and horizontal ground motion. These can be the most destructive waves as they roll along, causing the ground to rise and fall as they pass.
What type of wave causes the ground to shake?
Rayleigh waves
Rayleigh waves, also called ground roll, travel like ocean waves over the surface of the Earth, moving the ground surface up and down. They cause most of the shaking at the ground surface during an earthquake. Love waves are fast and move the ground from side to side.
What is the back and forth movement caused by an earthquake?
The shifting rock in an earthquake causes vibrations called seismic waves that travel within Earth or along its surface. P waves cause the ground to compress and expand, that is, to move back and forth, in the direction of travel.
What are P waves S waves and L waves?
There are two types of seismic waves : Body waves. Surface waves….Difference between s waves and p waves.
P waves | S waves |
---|---|
The first wave to hit seismographs | Second waves to hit seismographs |
They are compression waves | They are shear waves |
Can move through solids and liquids | Can only move through solids |
How do seismic waves shake the ground?
The energy radiates outward from the fault in all directions in the form of seismic waves like ripples on a pond. The seismic waves shake the earth as they move through it, and when the waves reach the earth’s surface, they shake the ground and anything on it, like our houses and us!
What is the cause of the shaking of the ground?
Ground shaking is a term used to describe the vibration of the ground during an earthquake. Ground shaking is caused by body waves and surface waves. Body and surface waves cause the ground, and consequently a building, to vibrate in a complex manner.
What type of wave as it rolls moves the ground up and down and forward to backward in the direction that the wave is moving?
There are two types of surface waves. Love waves move side-to-side, much like a snake. Rayleigh waves produce a rolling motion as they move up and backward (Figure above).
How are S waves and P waves similar they shake the ground?
How are S waves and P waves similar? They shake the ground. They travel through liquids. They arrive at the same time.
How does an earthquake cause a seismograph to shake?
When an earthquake causes the ground to shake, the base of the seismograph shakes too, but the hanging weight does not. Instead the spring or string that it is hanging from absorbs all the movement.
What happens to the ground during an earthquake?
When an earthquake causes the ground to shake, the base of the seismograph shakes too, but the hanging weight does not. Instead the spring or string that it is hanging from absorbs all the movement. The difference in position between the shaking part of the seismograph and the motionless part is what is recorded.
When does an earthquake have a foreshock It is called?
Sometimes an earthquake has foreshocks. These are smaller earthquakes that happen in the same place as the larger earthquake that follows. Scientists can’t tell that an earthquake is a foreshock until the larger earthquake happens. The largest, main earthquake is called the mainshock.
How does the size of the fault affect the magnitude of an earthquake?
The length of the wiggle depends on the size of the fault, and the size of the wiggle depends on the amount of slip. The size of the earthquake is called its magnitude. There is one magnitude for each earthquake. Scientists also talk about the intensity of shaking from an earthquake, and this varies depending on where you are during the earthquake.