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30 Cards in this Set
- Front
- Back
Theory of Plate Tectonics
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describes continental movement but also proproses a possible explanation of why and how continents move
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Tektonikos means what
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Construction
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Tectonics
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study of the formation of features in the earth's crust
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What are 2 types of crust
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oceanic and continental
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lithosphere
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solid relatively rigid outer shell of the earth
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asthenosphere
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layer of plastic rock
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what is the breakdown of the number of lithophere plates
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7 major, 13 minor
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3 types of plate boundaries
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divergent, convergent, and transform fault
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divergent boundary
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it occrs when 2 plates move away from each other
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rift or rift valley
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narrow valley formed as plates separate in teh center of a mid-ocean ridge
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african and arabian
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2 plates that formed the red sea
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convergent boundary
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direct collision of one plate with another plate
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subduction zone
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region a long a plate boundary, where one plate is forced under another plate
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convergent
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himalaya mountains were formed by this type of boundary
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island arc
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chain of volcanic islands
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california
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where the san andreas' fault is located
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convection
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the transfer of heat through the movement of heated fluid material
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convection currents
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cycle of warm water risin and and cool water sinking
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bubbles
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is the visible evidence of convection in a pot of boiling water
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heat from the earth's core and mantle causes some material in the asthenosphere to become _______ and therefore _______
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hotter; less dense
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ocean floor
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evidence for the existence of convection currents in teh asthenosphere comes from recent studies of what
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200
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how many terranes form alska to the baja
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25
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the terranes from alska to baja california increase the continent by what %
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terranes
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pieces of land, with its own geologic history
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3 identifying characteristics of a terrane
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rocks and fossils, major faults at boundaries, and magnetic properties
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coral atolls
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ocean islands of coral
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coral
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skeletons of sea organisms
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limestone
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what minteral is permanette made of
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as hot magma ____ and _______, it carries the lithosphereic plates
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rises and cools
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mountains that contain rocks and fossils that once lived in the ocean, must had gotten there by terranes scraped off the ______
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ocean floor
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