notes
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| exploration vehicle | submersible
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| the submersible that discovered the Mid- Atlantic Ridge | Alvin
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| pan | all
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| Greek goddess of Earth " Mother Earth" | Gaea
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| 4 things that prove seafloor spreading | 1. Mesosauraus 2. age and type of rocks in Africa and South America3. mtn. ranges on 2 different continents connect 4. climate change( glacier debris in Africa and South America- coal deposits in US, Eur, Siberia
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| paleo | old
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| study of earth's magnetic history | paleomagnetism
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| Earth's magnetic orientation has reversed ____ times. | 9
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| The proof for this magnetic orientation is | mineral stripes on either side of the ridge were mirror images
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| opposition to continental drift | seafloor spreading
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| princton professor that gathered information for seafloor spreading | Harry Hess
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| meso | middle
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| sauraus | terrible lizard
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| To have something decompose completely, you need to have | oxygen
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| name of park with Pacific Mid ocean ridge and Mid Atlantic Ridge | East Pacific Rise
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| Iceland means | Land of Ice and Fire
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| Iceland was formed by | lava eruptions of the Mid- Atlantic Ridge
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| In Iceland the Mid Atlantic Ridge ___ (does what) | Pokes head above sea level
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| Number of plates | 14 major, 38 minor
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| theory of the continental drift and seafloor spreading | plate tetonics
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| tetonics comes from the ______ word ______ which means ______. | Greek; tetonikos; construction
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| study of the formation of the features in the Earth's crust | tetonics
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| stated the continents have moved | continental drift
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| single landmass of all the continents - means all lands | Pangea
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| huge ocean | Panthalassa
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| undersea mountain range with a steep narrow valley running down it's center | Mid Atlantic Ridge
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| movement of the ocean floor | seafloor spreading
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| the study of magnetic properties of rocks | paleomagnetics
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| material on the ocean floor continental landmasses | oceanic
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| solid reletively rigid outer layer shell of the earth containing oceanic and continental crusts and part of the earth's upper mantle | lithosphere
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| a layer of plastic rock beneath the lithosphere | asthenosphere
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| two plates moving away from eachother | divergent boundary
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| in the center of the Mid Ocean Ridge valley formed as the plates separate | rift valley
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| the direct collision of 1 plate with another | convergent boundary
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| the region along a plate boundary where 1 plate is forced under another plate | subduction zone
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| chain of volcanic islands | island arc
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| 2 plates grind past eachother do not slide along smooothly | transform fault boundary
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| transfer of heat through a movement of heated fluid material | convection
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| cycle of warm water and cool water sinking to replace it | convection current
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| suggests that the continents are actually a patchwork of terranes | theory of terranes
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| pieces of land each with its own distict geologic history | terranes
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| fissure
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| Red Sea occupied by a rift valley formed by | the separation of Africa and the Arabian Plates
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| fault
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| boundary
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| plate is forced under the plate with less dense continental crust- creates more oceanic crust | oceanic crust collides with continental crust
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| oceanic crust is _____ -er than continental crust | denser
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| oceanic crust is made of | basalt
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| continental crust os made of | granite
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| forms on the continental crust line | volcanoes
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| oceanic converging and subducting under continental causes volcanic activity along North Pacific coast | Juan de Fuca
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| leading edges of continental crust come together - what happens? | crust make fold which form large mountain ranges
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| oceanic crust converges with oceanic crust - what happens? | forms deep trenches
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| __________ are island arcs | Aleution islands
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| transform fault create | earthquakes
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| _ is higher along plate boundaries where two plates are moving apart | heat flow
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| major transform fault boundary | San Andreas Fault
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| Scientists have dtermined that there are higher tempuratures at _______ where heat escapes from " down under" | plate boundaries
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