WOU ES 104 - Lecture Notes (4 pages)

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Lecture Notes



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Lecture Notes

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Pages:
4
School:
Western Oregon University
Course:
Es 104 - Earth System Sci
Earth System Sci Documents
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Peer Led Team Learning ES104x Earth s Place in the Cosmos Earth s Structure History of Astronomy Syllabus page 4 PLTL 1 hour credit not graded Pass NC First meeting this week Thursday 4 PM NS 101 leader Brown is instructor of record Ryan Korn is team leader Sign up now or at first meeting Blue sheets up front CRN 11170 EARTH SCIENCE 104 Syllabus page 5 Syllabus page 5 Syllabus page 5 Syllabus page 6 Syllabus page 6 Syllabus page 6 1 No lab this week Syllabus page 7 Planet Earth Must pass lab to pass this class Instructors will give percent lab grade to one another Introduction Get Lab Manual this week Do PRELAB 1 before lab next week Bring manual to lab each week Surface covered with Hydrosphere http www earthscienceeducation com creative science chemistry index htm Atmosphere Geosphere Biosphere http www miamisci org ecolinks geosphere html Sphere interactions Complex Interactions http www msu edu colungag docs philosophy htm Hydrologic Cycle http www mnforsustain org water climate global water cycle study htm 2 Crust Tectonic Plates Tectonic movements http earthquake usgs gov learning glossary php term crust Internal and external cycles Earth s Structure Convection Rocky Planet Silicates Metals Melting allowed gravity to separate by density Metals drawn to center Silicates dominate the remainder Oxygen and Silicon most common elements Combine with other elements to make feldspars pyroxenes amphiboles and quartz Composition Internal Division Earth s Interior Properties Mantle Crust boundary is compositional More silica less iron magnesium in crust than mantle Core 3500 km radius metal Mantle 2900 km thick High iron magnesium silicate rock Crust 100 km High aluminum silicate rock Asthenosphere Lithosphere A th h Lith h Inner core solid Outer core liquid boundary is based on properties Asthenosphere is weak flows Lithosphere is rigid and contains Lower mantle fairly solid Asthenosphere mobile Lithosphere rigid some of the upper mantle and all of the crust 3 Interface of spheres Solar system formed from nebular cloud Nebular Hypothesis of Solar System Formation Occurred about 5 billion years ago Nebular Hypothesis Big Bang forms all matter NEBULA Rotating cloud of dust and gases Our solar system Sun Major j Planets Dwarf planets asteroids and comets Hypothesis that it formed from nebula by gravitational contraction and solids colliding and becoming planets etc Much more ancient than nebular collapse Beginning of the universe about 14 b y a Was the big bang the event that formed our solar system No The big bang was the singularity that created the matter and space of the universe It occurred about 9 billion years universe before our solar system condensed from a nebula What is a nebula a swirling cloud of dust and gases Clickers We will use clickers to log your attendance by the last 6 digits of your V number You will need it for this class each day day so bring it or memorize it it The clickers can only record a SINGLE DIGIT for any slide I will ask for just one digit at a time For example first enter 1 if your v00 is V00143258 Wait for next slide to enter the 4 4


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