ESS205H1 Study Guide - Midterm Guide: North American Plate, Asteroid Family, Subduction
Document Summary
Like an open system but in a state of equilibrium. The atmospheric and hydrospheric conditions and blah blah make it the only habitable place for us humans. Rock record got destroyed because of plate tectonics. Structure of core: inner core (solid), outer core (molten) Te(cid:373)perature is (cid:448)ery high i(cid:374) i(cid:374)(cid:374)er (cid:272)ore (cid:271)ut it"s still solid (cid:271)e(cid:272)ause of high pressure. Oldest continental crust is 4 billion years old. Iron ad stuff started sinking to the centre of the earth. There was no oxygen in the atmosphere discuss changes in the atmosphere. Need to know when which organisms came around at what time. 2. 7 : the great oxidation event there were times there was absolutely no ice. Mesozoic: dinosaurs came along and disappeard around end of mesozoic(?) and cretaceous. He wasn"t su(cid:272)(cid:272)essful i(cid:374) sho(cid:449)i(cid:374)g e(cid:448)ide(cid:374)(cid:272)e of (cid:272)o(cid:374)ti(cid:374)e(cid:374)tal drift a(cid:374)d a(cid:272)(cid:272)ept that pa(cid:374)gea (cid:449)as a supercontinent blah blah. There are still volcanic activities happening in hawaii.
