GEL 2 Study Guide - Comprehensive Final Exam Guide - Rock Music, Plate Tectonics, Geology
Document Summary
Inside the earth: crust-thin rocky surface of earth, core-metal, mainly iron and nickel, outer core-always hot keeps molten teaching temperatures as high as the temp. of sun"s surface. The granite magma rises to the top of the surface before solidifying: the movement of earth"s crust draws basalt crust back towards the mantle and remelts it in order to form new granite magma. Then it rises to the top in order to form new continents. Continental drift: tectonic theory presented by a german meteorologist alfred wegener in the 20th century, he first observed the west coast of africa and how it mirrored the east coast of. South america: also, he observed the similiariy between the continets on other topics such as geological strata and ancient animal and plant fossilis. South america: even the smallest plates are bigger than a country, they shift about 1cm/. 4year, nazca plate in pacific moves 20 times faster, others can move more in a single month.
