life‚ the environment‚ and infrastructure after a volcanic eruption. Volcanoes are formed at various plate boundaries‚ such as at mid oceanic ridges where plates are moving apart‚ for example at the Mid Atlantic ridge. They also occur on or near subduction zones. The ‘ring of fire’ tends to be where the most violent volcanic activity occurs. The scale of destruction a volcano has is heavily dependant on whether the eruption occurs in an MEDC or an LEDC and the way in which these country’s prepare and
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General Study Guide: Test 1 Garrison 8th Edition Go over all powerpoint slides and concepts discussed. Chapter 1 Origins 1. Ages: Universe‚ Earth‚ Ocean 2. Scientific method 3. Big Bang Theory – universe is expanding - two major sources of evidence 4. Hubble’s Law 5. What is a light year and why do we use it to measure distance in the universe? 6. What are 3 major processes that formed the solar system and planets? 7. What is most abundant element in solar nebulae? 8. What are
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the East African Rift Zone to answer question 76. EURASIAN PLATE Nile River AFRICA AFRICAN PLATE Atlantic Ocean f Gulf o Aden ARABIAN PLATE LEGEND Volcano Plate boundaries East African Rift Zone 76. What will occur near the Gulf of Aden as the tectonic activity within the East African Rift Zone continues? A. B. C. D. Sea water will flood the East African Rift Zone. A subduction zone will form along the Gulf of Aden. Volcanic activity in the East African Rift Zone will stop. The Arabian
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Heat Engines * External * Energy form the sun * Internal * Energy from radioactive decay Earth’s Interior * Crust * Thin outer rocky shell (solid) * Variable thickness * Mantle * Hot solid * Special “plastic” zone * Fe‚ Mg‚ and Si rich minerals * Core * Outer Core * Liquid‚ mostly iron * Inner Core * Solid‚ mostly iron Rock vs. Minerals * A mineral is a crystalline solid and is formed by natural geological processes * Has a specific
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All of these small pieces of rock collect as sediment at the bottom of seas and oceans. The sediment slowly solidifies into rock and is sometimes drawn back down into the mantle at subduction zones or reaches the surface again as sea levels change or plates collide(http://www.uen.org/)." The process of how rocks are form is time taking. So the next time when I see a rock on the sideway‚ I will relate how many old is the rock or how long
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Part 1 of 1 - 100.0/ 100.0 Points Question 1 of 22 4.0/ 4.0 Points Who proposed that all of the present continents were once joined together in a single supercontinent called Pangaea? A.Alfred Wegener B.Charles Darwin C.Arthur Holmes D. Harry Hess Answer Key: A Question 2 of 22 4.0/ 4.0 Points The scientific community rejected the theory of plate tectonics because Alfred Wegener could NOT A.identify a mechanism to move the continents. B.disprove competing theories
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“Evaluate how plate tectonics theory helps our understanding of the distribution of seismic and volcanic events” (40 marks) The theory of plate tectonics was first introduced by Alfred Wegener in 1912. He observed the continents an could see they interlock like a jig saw puzzle‚ for example the West African Coastline fits snugly into the South American coastline‚ he suggested that at one point in time there was only one giant continent called “Pangea”. Later evidence was found that proved this theory
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aggression/threatening. All involved with him being forced‚ under the threat of eviction. Several times he wound up being committed or homeless on the streets and now 4 years in a step down program. So what’s different now? When we met with senior Cascadia staff the 1st of February‚ Dr. Conour approved him safe to be in the community‚ on his present medications. I have implicit faith in his judgment. The
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eruptions have occurred in such a short period of geologic time. The Galapagos Islands are located on the equator west of the South American coast. Like many oceanic islands‚ they are formed by a mantle plume or hotspot like Hawaii. A major subduction zone currently sits under the islands‚ the two plates that are subducting beneath the South American and Caribbean plates are the Nazca and the Cocos plates. The Galapagos were created by the Cocos and the Nazca plate‚ which are currently moving east-southeast
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Info and Causes Time and date was December 26‚ 2004‚ at 07:58:50 local time. The magnitude of the earthquake was 9.2 for 5 minutes. This was one of the most powerful earthquakes for 100 years. The fault ruptured on the subduction zone of the Indian (Eurasian) plate and the Sunda plate (Indonesian plate). The plates usually move 6.2cm per year. The epicentre was 20 kilometres deep under the sea(very shallow!)‚ 250km off the coast of Indonesia near the city of Banda Ache. The earthquake
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