plate boundries Flashcards
plates moving apart and new seafloor
divergent
convergent plate
what landform can this make?
plate moves together
mountains
transform plates____ each other without the productions or _____ of the ______
GRIND past each other without the production or destruction of the lithosphere
spreading center , rift
this is exemplifed through (pick one)
younger/older seafloor, ____ at the ___ center,
a space for mantle to push up to make space for new ocean crust
answer: younger seafloor, earthquakes at the spreading center
a thin line of red dots indicate a _____ adn form when_____
this indicates a ____ plate boundry
earthquake
the earth crust breaks
divergent plate boundary
explain how rifts form
where can these rifts be?
thick crust, pulls apart
pull apart
pulls apart a lot=a river or ocean
ex: red sea, africa split apart from eurasia
ocean and land
where the ocean is sliding apart is called ___ faults and they dont break evenly because____
think: CURVED baseball ripping at the seams
transform faults
the earth is curved
volcanos within plate are called __ __
hint: temp of volcanoes
___ has a lot of hot spots
hot spot
hawaii
what do hot spots help us doccument in terms of plates?
what do we use to track this?
what is this trackign thing measured in?
it shows that the plate is moving
GPS (global positioning system)
millimeters
what rate do plates move at
hint: same rate as fingernails growing
on maps thjis is indicated by
a fater rate is idicated by:
7cm a year
arrows
age information , larger red area/younger age
t
seafloor joining two spreading center is called ____ ____
fracture zones
convergent boundries make
earthquakes because when they converge they crack adn break
continents meeting contentes=
montains, rarely any volcanoes becuase contential crust is very thick, lots of earthquakes
