location and plate tectonic settings can easily help show why more than 50 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
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continental drift; Evidence he used includes matching fossils‚ rock types‚ and ancient climates. 4. The three types of plate boundaries are: * Divergent boundaries are a region where the rigid plates are moving apart‚ typified by the oceanic ridges * Convergent boundaries are a boundary in which two plates move together * Transform boundaries are a boundary in which two plates slide past each other without creating or destroying lithosphere 5. Seismic waves are vibrations that travel
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“The extent to which tectonic processes represent hazards depends on when and where they are experienced.” Tectonic hazards are dangers caused by the movement of the earth’s plates. The majority of hazards represent by plate tectonic occur at plate margins where two plates meet. These natural processes become hazardous when they affect people and cause material losses such as the destruction of infrastructure as this inhibits sustainable development. These hazards can be reduced depending on when
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for this lecture Why Learn Earthquakes? Plate Tectonics they are not static they always move. they are moving in a limited space it will cause friction when it moves moves very slowly a few centimeters a year. slides past each other and radiated seismic energy. as it travels it causes shaking. seismic waves from epicenter cause a lot of shaking Continental drift pangea moved and separated into different continents. SF 1906 the plate moved 400 km past each other creating 8.2 earthquake
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agar plates divided into 4 equal sections were used for this experiment. Each section was labeled with a number from 1-8. 8 Sterile swabs were used‚ 1 for each surface swab. 8 surfaces in my home were then identified that could serve as a fomite and swabbed with a sterile swab that was dipped in distilled water to moisten it. Surface #1 was the garbage disposal in the kitchen sink. It was swabbed and the microbes transferred to the appropriately labeled section marked #1 of the agar plate. Surface
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cause the breaking and bending of the Earth’s crust. Geographers call these movements tectonic processes. The Earth’s crust is made up of many individual moving pieces called tectonic plates. There are nine large plates and about a dozen smaller ones. The larger plates contain the continents and oceans. These plates ‘float’ on the dense layer of rock below. Geographers have long been aware that‚ if the continents were rearranged and repositioned‚ they would fit together like a jigsaw. Scientists
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the risk they pose differs around the world. One factor that heavily influences how hazardous a volcano is‚ is the plate boundary that it lies on. Subductive plate boundaries tend to produce much more violent eruptions than conservative or constructive margins. Subductive boundaries occur where two plates (one continental and one oceanic) are moving toward each other. The denser plate‚ the oceanic‚ is forced underneath the continental. As it subducts into the asthenosphere‚ it begins to turn back
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Drift Abstract The Earth is formed by plate tectonics continuously shifting causing a continental drift. This theory is more accepted than when it was originally published due to better technology providing better research and evidence. This paper discusses a little on both the plate tectonics and the continental drift as well as how the scientific method helped understand this process better. key words: Continental Drift‚ Scientific Theory‚ Plate tectonics In 1915‚ a scientist by the
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Acetic Acid Solution (pH of 3) *0.2M Sodium Hydroxide Solution (pH of a 11) *100mL beaker (3 x) *Bunsen burner *lighter *heat-proof mat *tripod *gauze mat *stirring rod *Petri dishes (6x) *small wooden blocks *fine black marker Agar Plate Inoculation: *fine black marker *ruler *sticky tape *sterilized cotton bud (6x) *paper towels *meat extract stock *pipette dropper *50mL conical flask Method: Agar Solution Preparation: 1. Hands were first washed with soap or sanitizer
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Chapter 1 1.1 Earth Science & the Earth System -Earth science is the study of Earth and the processes that shape it -The earth system is composed of four principal components: atmosphere (air‚ weather)‚ hydrosphere (water‚ ice)‚ biosphere (plants‚ animals)‚ and geosphere (land‚ rocks). - Earth science can be broadly defined as the investigation of interactions among the four parts of the earth system. - The second largest earthquake ever recorded buckled the seafloor west of Sumatra‚ Indonesia
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