ch 25 Flashcards
(47 cards)
a range of mountain in the sea
mid ocean ridge
peaks at the mid ocean ridge
rift valley
the boundary where two plates collide
convergent plate boundary
the denser plate
subduction
horizontally plates pasting eachother but opposite diretion
transform plate boundary
two plate moveing a part
divergent plate boundary
a sudden movement or viberation of the earth
earthquake
a crack of the earth crust
fault
sudden release of strain energy to a fault
elastic rebound
were the earthquake start
focus
the point on earth surface directly above the focus
epicenter
what the 3 pices of evidence?
cost line match up like a puzzle
found large land fossils
mountain ranges match up and are made up of the same rock and age
what was the name of the super continent
pangaea
who came up to the sea floor spreading hypothesis
harry hess
how did he map the sea floor
sonar
what did harry hess discovered
mid ocean ridge system
where at the bottom of the sea floor where is the younges rock found
mor mid ocean ridge
what are the type of plate boundary
divergent
convergent
transform
how do the move
the two crash together
subduction zone acures with what plate bondry
vragin plate boundry
what two type of crust are involed in plate movement
oceanic crust
continental crust
what are the type of land forms that oceanic and continental curst converge
volcanoes
deep sea trench
what forms show up when two oceanic crust
deep sea trench hot spots ( land)
what land forms when it two continenantal
mountains