[EESA01H3] - Final Exam Guide - Everything you need to know! (22 pages long)
Document Summary
Paradigm in geology supercontinents and supercontinent cycles" this changed the way we look at the earth. Earth"s surface is always moving - there is nowhere that is stable. Everywhere is on the move both horizontally and vertically. Rising or slowly subsiding in north america, the plates are moving 3. 7 cm/year towards the southwest. Sea floor spreading: progressive widening of the ocean basins. Plates are made by magma, intruded by magma which then spreads the rock. Basalt is made out of iron and magnesium - high density. Andesite: continental crust type of rock which the andes are made of lateral blast: volcanic eruption in a horizontal direction. Volcanic ash(tephra): very fine rock pulverized during wild eruptions. Geophysi(cid:272)s: a(cid:271)ility to (cid:373)ap re(cid:373)otely what"s u(cid:374)der(cid:374)eath the o(cid:272)ea(cid:374), what"s underground using electromagnetic waves, sound waves. These waves go into water and return to get the structure of the earth.
