1. What is Earth’s mantle? The mantle is a part of a terrestrial planet or other rocky body large enough to have differentiation by density. The interior of the Earth‚ similar to the other terrestrial planets‚ is chemically divided into layers. The mantle is a layer between the crust and the outer core. ... 2. What elements make up the Earth’s mantle? Magnesium‚ silicon‚ iron and oxygen‚ aluminum‚ silicon‚ calcium‚ sodium and potassium 3. Describe the “big splash” theory of the Moon’s origin? The
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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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crust‚ & continental crust. Plates: The lithosphere broken up into individual pieces. They move over the mantles Asthenosphere. Movement of Earth’s Plates:The plates move due to the mantles CONVECTION CELLS: warm material rises toward surface‚ cools&descends back into the interior. Creating volcanoes‚ earthquakes‚ MTNS. Crust: Earth’s outer most layer 2typesContintinential: thick w/silicon‚aluminum-Oceanic crust:Thin denser w/ dark igneous rocks (basalt/gabbro) PLATE TECHTONIC THEORY:The lithosphere
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occur both on land and sea.They may occur at areas where plates collide (subduction zones/ convergent plate margins) ; where plates slide past eachother along fault lines (transform plate margins) or due to volcanic eruption. Earthquakes may be of three different categories: * Tectonic – movement in the earth’s crust due to sudden movement along fault lines. * Plutonic - occurs deep within the subduction zone of colliding plates. * Volcanic – earthquakes accompanied by molten lava
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crust which underlies the ocean basins and covers 71% of earth’s surface Moving Tectonic Plates * Convection cells or currents move large volumes of rock and heat in loops within the mantle like giant conveyor belts * Flows of energy and heated material in the mantle’s convection cells cause tectonic plates to move extremely slow along earth’s surface * They float on an underlying sea of magna * Plates are composed of the continental and oceanic crust the lithosphere * Typical
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Internet Problem 1: Plate Tectonics and the Age of the Ocean Crust Please note: The Internet problems are designed to be completed individually; however you may discuss difficult questions in Open Discussion. You should read the information found at the website and answer in your own words. I remind you that cutting and pasting answers directly from a website is consider plagiarism‚ and you will receive a 0 (zero) on the assignment. If you choose to submit your answers in an attached file‚ please
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edu/~lstrayer/geol2101/2101_Ch19_03.pdf Paleontology and Geology glossary. (1996). Retrieved 2010‚ from Enchanted Learning: http://www.enchantedlearning.com/subjects/dinosaurs/glossary/Contdrift.shtml Plummer‚ C. C.‚ Carlson‚ D. H.‚ & Hammersley‚ L. (1937). Plate Tectonics. In C. C. Plummer‚ Physical Geology (pp. 485-86). McGraw Hill.
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paper‚ I will discus the history of earthquakes‚ the kinds and locations of earthquakes‚ earthquake effects‚ intensity scales‚ prediction‚ and my own predictions. An earthquake can be defined as vibrations produced in the earth’s crust. Tectonic plates have friction between them which builds up as it tries to push away and suddenly ruptures and then rebounds. The vibrations can range from barely noticeable to a disastrous‚ and destructive act of nature. Six kinds of shock waves are generated
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Tectonics and Continental Drift Past and Present Locations Abstract When we look at our earth’s surface now it has seven continents‚ and five of them are divided by the oceans that surround them. In 1912 Alfred Wegner (1880-1930)‚ came up with a theory called the continental drift; stating that over three hundred years ago all seven continents were once one super continent called Pangaea. Wegner tried to convince other scientists and geologist for many years that the continents
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(accessed March 23‚ 2013). Murano‚ Grace. 10 Geological Wonders you didnt know. 27 March 2009. http://www.oddee.com/item_96619.aspx (accessed March 23‚ 2013). National Oceanic and Atmospheric Administration. The Puerto Rico Trench: Implications for Plate Tectonics and Earthquake and Tsunami Hazards. http://oceanexplorer.noaa.gov/explorations/03trench/trench/trench.html (accessed March 23‚ 2013). Portland Cement Association. Cement & Concrete Basics: Aggregate. http://www.cement.org/basics/concretebasics_aggregate
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