Oceanogrphy Chap 11
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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| What is the deepest layer of the Earth? | Inner Core
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| What is the top layer of the Earth? | Crust
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| The uppermost solid portion of the mantle and the crust | Lithosphere
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| The type of rock that forms from compressed organic and inorganic particles. | Sedimentary
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| What principle relates to the theory that the lithosphere floats on the asthenosphere? | Archimedes' Principle
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| The balance between the weight and the bouyancy of the crust. | Isostatic equilibrium
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| How do landmasses restore balance when isostatic equilibrium is disrupted? | By rising or falling along a fault
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| The theory that all continents came from one landmass and drifted apart? | Continental drift
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| The single continent with a single sea that broke apart? | Pangaea
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| The name of Pangaea's single sea? | Panthalassa
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| Evidence Wegener used to support the theory of continental drift. | Shape of continents, coal in Antartica, and distribution of fossils
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| Why was Wagener's theory of continental drift not widely accepted? | It did not explain what forces could move continents
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| How has sonar contributed to information about the ocean's bottom? | Enables mapping of the bottom terrain
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| An underwater mountain range | Mid-ocean ridge
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| Runs through the center of a Mid-ocean ridge | Rift valley
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| New seafloor emerges from where and how? | Rift valley from magma pushing up from the asthenospehere
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| What evidence do we have about the seafloor spreading? | Pattern of sediment layers, dating of seafloor rocks, and magnetic patterns found on the seafloor
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| Plates that float on the lithosphere? | Plate tetonics
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| Mid-ocean ridges, rift valleys, and trenches mark what? | boundaries between tetonic plates
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| When plates spread apart? | divergent boundary
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| When plates collide? | Convergent boundary
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| Plates slide by each other? | Transform boundary
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| local rising of a column of magma that does not move with the plate above it? | Hot spot
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| Primary force that causes plates to move | Convection
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| In a million years, a new ocean will form in the East Africa rift valley due to? | Plate tectonics
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