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normal fault: pull apart divergent rift valleys and mid ocean ridges
reverse fault: squeeze convergent folded mountains, volcanos, and trenches
strike-slip: slide together suddenly transform earthquakes
Divergent: Apart o/o:mid ocean ridges c/c:rift valley
Convergent: Comes together o/o:volcanic islands o/c:subduction c/c:continental collision
Transform: slide together earthquakes
Harry Hess proposed sea floor spreading in 1960
a rope before WW1 this was used to measure the depth of the sea.
sound waves After WW1 this was usedto measure the depth of the sea.
pangaea one large land mass
mid ocean ridges ridges that run on the seafloor
convection current force drives plates from mantle (hot->cold->hot->cold)
Created by: webrocker8