Planet Earth Study Sheet Exam 1

Planet Earth Study - Planet Earth Study Sheet Uniformitarianism Time Catastrophism Discovered by Cuvier a catastrophe that wipes all life failed

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Planet Earth Study Sheet Uniformitarianism: Time Catastrophism: Discovered by Cuvier, a catastrophe that wipes all life, failed theory. 6 catastrophes. Georges Cuvier: Discoveed catastrophism. Neptunism: Idea that all rocks formed at the same time, failed because where’d the water go after evap to form rocks? Abraham Werner: Discovered Neptunism James Hutton: Discovered Uniformitarianism in Scotalnd at Siccar point where he noticed changes in rocks like angular unconformity . PRESENT IS KEY TO PAST. Charles Lyell helped this guy. Iridium: Found in space meteorites, studying iridium levels lets us see if a lot happened at once to find if there was an impact and a catastrophe or something. Age of the Earth: 4.6 billion years. Big Bang: Concentrated Energy at one point being fully released. Doppler Effect: Wavelengths are higher and faster when cramped together, but lower when spread out. Example is a train, far away the wavelengths bunch up as they make it to you together so its high, but when its next to you its in real time and a lower sound. Red Shift: Similar to Doppler effect but with light instead of sound, bunching up light waves. Approaching you is Blue and heading away is Red. Solar Nebula Hypothesis: The Solar System was created as a result of the collapse of a Molecular cloud, a single event that created the solar system. All the matter in the molecular cloud pulled toward itself and spun faster and faster until it condensed to a single point and exploded. Evidence of this is seen in that the solar system is all on a single plane. Molecular Cloud: Very dense matter, 10^19 atoms/cm^3 as opposed to our 10^7 atoms/ cm^3. It spins and a gravitational effect and conservation of angular momentum pulls the cloud smaller and smaller. Atoms bang into each other to form planets and such. Most Common elements in the Whole Earth: Iron 35%, Oxygen 30%, Silicon 15%, Magnesium 13%, Nickel 2%. Density of Earth: 5.5g/cm^3 Most Common elements in the Crust: Oxygen 46%, Silicon 28%, Aluminum 8%, Iron
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6%, Magnesium 4%. Core: Inner core is solid and could be a giant iron crystal. Outer core is liquid and completely molten. Crust: Continental Crust 5-40km’s, Oceanic Crust 5-8km’s. Mantle: Similar to Crust elements, except with more Magensium. 0-2900km’s Plate Tectonics: The Unifying Theory, 7 Major Plates: Antartic, Pacific, Eurasian, North American, South American, African, Indian Australian. Lithosphere: Continental Lithosphere outer surface is ~200km deep and the Oceanic Lithosphere outer surface is ~125km deep. Subduction and Convergence occurs in the Lithosphere and as they move apart more crust is created. Asthenosphere: Mantel area that is kinda soft because its closer to the core. Convection:
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This note was uploaded on 02/08/2011 for the course ECONOMICS 101 taught by Professor June during the Spring '08 term at Rutgers.

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Planet Earth Study - Planet Earth Study Sheet Uniformitarianism Time Catastrophism Discovered by Cuvier a catastrophe that wipes all life failed

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