EOSC 112 Lecture Notes - Lecture 8: Positio, Oea, Magnetite
9
EOSC 112 Full Course Notes
Verified Note
9 documents
Document Summary
Solid earth affects the evolution of climate because: Volcanoes can add greenhouse gases to the atmosphere. The formation of mountain ranges can remove greenhouses gases form the atmosphere. The changes in position, size, shape of continents on the surface affects the albedo. All 3 are correct reason this is the correct answer will be explained later in course. Multi-million year timescales note, things move really slowly. Note: denser material at the center, less dense material on the outside. Inner part is solid, outer part is fluid: 90% iron/nickel alloy, 13g/cm3, 3400km in radius. Mantle: layer between crust and core: upper 3. 3g/cm3 (plastic, lower 4. 5 g/cm3 (solid, mineral rich in silicon/oxygen (silicate materials, 2900km thick. Crust: thin, relatively lightweight outermost later, rigid: silicate minerals. Temperature increases with depth at the base of the lithosphere, the temperature is ~1000*c, at the base of the mantle, is it ~3000*c, and at the center, it ranges from ~4000 6000*c.
