under an urban area of the United States since the 1933 Long Beach earthquake caused by the movement of huge blocks of the earth’s crust- the Pacific and North American plates. 2.0 CAUSE The earthquakes of California are caused by the movement of huge blocks of the earth's crust- the Pacific and North American plates. The Pacific plate is moving northwest, scraping horizontally past North America at a rate of about 50 millimeters per year. About two-thirds of this movement occurs on the San Andreas
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over 12,000 people lived on the island but less than 5000 do today The Causes of the Montserrat Eruption Montserrat lies on a compressional plate boundary. The volcano is caused by subduction of the North American/Atlantic plate under the Caribbean plate. As the two plates merge the oceanic plate is forced down or sub ducted under the continental plate. As it is forced down pressure increases which triggers earthquakes and at the same time heat produced by friction melts the descending crust to
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EAS-101 1. Compare and contrast primary (P) and secondary (S) waves. How are they used to determine the nature of the layers of Earth? How might they be used to determine the epicenters of earthquakes? Primary waves are considered to be compression waves, while the secondary waves are considered to be the shear waves that travel through the interior of the Earth. Primary waves hold similar characteristics as sounds waves and manipulate the medium they travel through by compressing
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Earthquakes are an example of seismic activity created by plate boundaries. They can be caused by the subduction of oceanic crust which is densest at 2.9 g/cm3 under continental crust which weighs 2.7g/m3 at destructive plate boundaries. Earthquakes can also occur along conservative plate boundaries such as that shared by the Pacific and North American plates which move at 5-9 cm/year and 2-3 cm/year respectively causing the 1994 Los Angeles earthquake along the San Andreas fault alongside which
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HW 1 Due 2/24/13 – by noon, really at noon. Turn in via SAKAI – do not email it. Turn it into a .pdf file using export or save as. Please do not turn in a .doc or a .docx file. Name your file as follows. Lastname_hw1.pdf - like roman_hw1.pdf A Note about calculations in general, please read. Before turning your work in, it is important to ask yourself whether a calculated answer is within the realm of possibilities, independent of how detailed the calculations required to determine the answer were
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Name of Scientist | Year/Date Discovered | Description of the Inventor | Nicolaus Copernicus(Astronomer) | 1473-1543 | proposed a model of the solar system that involved the Earth revolving around the sun. The model wasn't completely correct, as astronomers of the time struggled with the backwards path Mars sometimes took, but it eventually changed the way many scientists viewed the solar system. | Galileo Galilei(Astronomer) | 1564-1642 | he discovered the four primary moons of Jupiter (now
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Last February 6, a 6.4 magnitude earthquake hit Taiwan. With 116 deaths and widespread damage, it is the deadliest earthquake the country has ever experienced for 1095 years. Two days after, another 6.4 magnitude earthquake shook the grounds of Papua New Guinea, with a minimal damage and zero casualties. And just two days ago, New Zealand experienced a tremor of almost the same scale, categorized as severe. While damages are at a minimum based on the latest evaluation, it is clear that a movement
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What is Geography? Geography is the study of earth’s surface and the processes that shape it. It is the connection between places. Who are Geographers? Geographers are scientists who study the relationship between people and their environments. Two main branches of geography • Physical geography Study of the physical features and changes on the earth’s surface. • Cultural geography Study of humans and their ideas and the impact of human ideas and actions on the earth.
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The Grand Canyon is a notable topographic feature in Northern America. It has nearly 2, 000 meters of rock layers exposed on the surface with twelve major rock units and occupies a region of broad continental crust. Despite its vastness, how it exactly became as it is now remains a question to scientists who study the area. The Grand Canyon is located specifically at the southwestern edge of the Colorado Plateau in Arizona. It begins at Lee’s Ferry and ends at the Grand Wash Cliffs. It reaches up
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Troposphere: The troposphere is the first atmosphere’s layer after the Earth’s crust. This is the layer where all the weather condition such as rain, snow, wind etc. happens. The layer starts immediately after the crust and because of the irregular surface of the Earth, the height of the layer can change, the maximum height is 20 Km and the minimum can be below 6 km. The composition of the troposphere includes nitrogen (78%), oxygen (20%), argon (0.93%, carbon dioxide (0.04%), water vapour and
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