January 29th - - Large amounts of gas and ice create the...

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January 29 th 1) Model of formation of the solar system - Steps (Sun): - Cloud is unstable, collapses due to gravity - Rotation initiated - Faster rotation with more collapse - Some matter ‘thrown’ outward - ‘Central condensation’ with disk after ~ 10-100 kilo years - Planar arrangement; all revolving in the same direction - With collapse, fusion, after ~ 10 million years - Steps (Solar System): - Disk becomes lumpy… planets - 10-100 million years from beginning of collapse - Samples from this time carbonaceous chondrites  * Carbon rich, high temperature minerals, evidence for elements  that have been in existence for a longer time - Near new star, only elements with high condensation temperatures are  able to condense (gas   solid): Al, Si, Fe, Mg - Lighter elements are blown outward by solar wind - Outer solar system probably blizzard like with snowflakes, which clump
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Unformatted text preview: - Large amounts of gas and ice create the gas giants 2) Formation of the moon- Mars sized object crashes into the Earth- Material thrown outward begins to orbit Earth 3) What does the future hold for our solar system?- Not a good outlook- Approximately 4 billion years from now our sun will become a red giant- Grow to 140 million kilometers in diameter- Mercury destroyed- Venus ~ 1700* C- Earth ~ 1400* C 4) Interior of the Earth- Lithosphere: * 0 Km * Cool, rigid, and brittle; this is where the plate tectonics are- Asthenosphere: * 100 Km * Hot, weak, plasticity- Mesosphere: * 350 Km * Hot, but stronger than the asthenosphere- Outer Core: * 2883 Km * Liquid- Inner Core: * 5140 Km * Solid 5) Composition- Crust: * 8-40 Km from surface * Si, O, and light elements- Mantle: * 40-2883 Km * Mg, Si, O- Core: * 2883-6371 Km * Fe, Ni, S...
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January 29th - - Large amounts of gas and ice create the...

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