The And The Natural World

Earthquakes can be created on any of the plate boundaries. Earthquakes occur when tension is released from inside the crust. Plates do not always move smoothly alongside each other and sometimes get stuck. When this happens pressure builds up. When this pressure is eventually released, an earthquake tends to occur. The point inside the crust where the pressure is released is called the focus. The point on the Earth's surface above the focus is called the epicentre. Earthquake energy is released in seismic waves. These waves spread out from the focus. The waves are felt most strongly at the epicentre, becoming less strong as they travel further away. The most severe damage caused by an earthquake will happen close to the epicentre.

The earthquake was located on the San Andreas fault which is a seismic zone between two of the earth’s tectonic plates. Seismic events which occur is caused as a result of the earth’s tectonic plates moving against each other and this can cause huge earthquakes and volcanoes (“Young”). The transform boundary passes through California and this is where the Pacific and North American plates move past each other without colliding. The event in which this occurred was the San Andreas fault (“Young”). When the plates move past each other and the resistance builds up, this causes an earthquake like the 1906 San Francisco earthquake. This earthquake caused a separation and displacement in the landscape which was seen over several kilometers

The 1906 San Francisco Earthquake tectonic setting was in the outermost shell of earth known as the crust this is composed of rigid plates that have been moving for hundreds of millions of years. Two of these moving plates meet in western California; the boundary between them is a zone of faults, the principal one being the San Andreas fault. The horizontal sliding of the Pacific Plate relative to the North American Plate, causes earthquakes along the San Andreas fault and similar plates near the region. The San Andreas fault is a transform plate boundary, accommodating horizontal relative motions (usgs.gov).

The tectonic setting for the 1906 San Francisco Earthquake was in the outermost shell of earth consisting of rigid plates that have been moving for hundreds of millions of years. Two of these moving plates meet in western California; the boundary between them is a zone of faults, the principal one being the San Andreas fault. The Pacific Plate (on the west) slides horizontally northwestward relative to the North American Plate (on the east), causing earthquakes along the San Andreas and associated faults. The San Andreas fault is a transform plate boundary, accommodating horizontal relative motions (usgs.gov).

The San-Francisco earthquake caused quite a lot of damage in the area, but what is an earthquake? An earthquake is the movement of tectonic plates along a transform boundary and what plate is California sitting on? The Pacific Plate which is not connected to the North American plate and the plate boundary is a transform boundary. Earthquakes occur so often there that people say it is like a rainstorm that is ignored. The place where the Pacific Plate is grinding along with the North American Plate is called the San Andreas Fault. As stated before the earthquake had a magnitude of 7.8 which caused so much destruction a fire broke out. Nobody really knows where the fire started but it burned for 7 days and scorched over 500 city blocks leaving the once proud and powerful city into dust. The combination of the earthquake and fire is said to have killed “ Over 700 deaths by the earthquake and fire is now believed to be an understatement the total loss of life by a factor of 3 or 4.” (The Great 1906 San-Francisco Earthquake.)

Imagine yourself home doing a couple of sets of jumping jacks but then you feel weary so you stop for a water break. You notice that you kept on bouncing but it wasn’t your body moving it was the Earth that was shaking you, an earthquake occured. Earthquakes happen when the underground continental plates move. Earthquakes can affect the Earth, people, and property. To begin with, when an earthquake happens something on Earth is most likely to change.

Earthquakes are caused when two blocks of earth suddenly slip past one another. The surface where the two blocks slip is called the fault. The earthquake starts below the earth’s surface at the hypocenter, and the location above the hypocenter is called the epicenter. Earthquakes can have foreshocks which is a smaller earthquake that happens before the larger quake. Earthquake can also

There are many dangers to an earthquake. Earthquakes can cause damage to cities and many people end up injured or dead. The shaking of the ground can cause mudslides and landslides.Earthquakes can also cause terrible tsunamis.Earthquakes can occur on convergent, divergent, and transform boundaries. They can also can occur on subduction zones. In this case, the earthquake occurred on a subduction zone. Subduction is the process of which the denser plate sinks under the less dense

This piece of evidence is from the account “Horrific Wreck of the City” and is showing the POV that the earthquake brings out the worst in people. “Terror marked their faces, and yet their voices indicated a certain enjoyment that maniacs have when they kill and gloat over their prey. Hysterical women cried and raved for those they loved when they were standing right next to them.” page. 2 (para. 6)

By definition an earthquake is the tremor of the surface of the Earth, sometimes severe and devastating, which results from shock waves generated by the movement of rock masses deep within the Earth, particularly near boundaries of tectonic plates. The tectonic plates involved in the 2010 Chile earthquake were the Nazca and South American plate, and like all tectonic plates, they often move due to convection currents within the Earth’s mantle. This movement can cause tectonic plates to collide, separate or slide past one another. For thousands of years, the oceanic Nazca plate has been colliding and slowly subducting underneath the continental side of the South American plate. Earthquakes can be caused by a variety of reasons, but the 2010 Chilean earthquake was caused by these two tectonic plates having an ocean-continental collision at a convergent boundary.

The earthquake lasted a total of 45 seconds, but 26 aftershocks occurred over an extended amount of time afterwards. When the earthquake hit, most people, other than some police officers, were asleep. The earthquake had a magnitude of 7.9 on the richter scale, so the not so earthquake proof buildings, fell on people as they woke up. 400,000 people in San Francisco underwent this terrible shaking. There were reports of people feeling the shake from southern Oregon to Los Angeles and inland to Central Nevada. Although, there were rich people that had their houses in places such as Nob Hill. Nob Hill was made completely upon bedrock, making the earthquake quite small and unproblematic. The reason the city had the earthquake so bad, was because the city wasn’t built on bedrock, but built on some dirt and such. During San Francisco’s gold rush, they decided to expand the city, by literally creating their own land, by packing a combination of trash, dirt and sand, and then building over it. They were not anticipating what an earthquake could do to that particular land. That land, also called South of Market, was hit so badly, some buildings sunk in the loose sand, dirt and trash, up to three stories. During the fires, the water mains in the city broke due to the earthquake's intensity. The water was leaked into the soil, creating mud. One building that was over the broken water mains, sunk into the wet mud 3 stories, and the last

Have you ever felt the strongest earthquake happen? Well, the people in Chile had. An earthquake is a sudden and violent shaking of the ground, causing great damage. The earthquake’s magnitude reached up to 9.5; a magnitude is the great size or extent of something. This earthquake was the strongest and most powerful earthquake to ever exist, and to be fully recorded.

Earthquakes are measured based on their magnitude. The size of an earthquake is measured by the seismic waves that travel through the earth. The size of earthquakes is measured on a Richter scale. The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the size of earthquakes. “The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance

Discuss how the social, cultural and historical context shaped the meanings communicated in the artwork.

     Most of the worst earthquakes are associated with changes in the shape of the Earth's outermost shell, particularly the crust. These so called tectonic earthquakes are generated by the rapid release of strain energy that is stored within the rocks of the crust, which on continents is about 22 miles thick. A small proportion of earthquakes are associated with human activity. Dynamite or atomic explosions, for example, can sometimes cause mild quakes. The injection of liquid wastes deep into the Earth and the pressures