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| Innermost part of the Earth. |
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| Occurs at a convergent boundary. One plate moves below or descend the other. A continental plate and an oceanic plate coming together. |
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Name Wegener gave the single land mass that existed millions of years ago.
The supercontinent which contained all the continents in onelandmass |
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| Boundary where two plates move past each other (slide past horrizontally, earthquakes occur here. San Andreas Fault in California is a great example of this type of boundary |
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| Theory of Plate Tectonics |
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| Theory that states that Earth's lithosphere(crust and upper mantle) move on top of the asthenosphere. |
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| Boundary where two plates move away from each other, sea-floor spreading occurs and new ocean crust is formed. |
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| Deformation of rocks caused by compression, upward arching fold in the rock |
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| Layer of the Earth that contains most of Earth's mass. |
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| Theory of Continental Drift |
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| Alfred Wegener's theory that states that all of the continents were one large land mass and over millions of years, moved to their present locaation. Also explains why fossils of the same plants and animals are found on different continents |
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| Boundary where two tectonic plates move toward each other, mountain building and volcanoes occur here. |
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Hess’s theory that new ocean crust is formed at mid-oceanridges and destroyed at deep-sea trenches or
Two plates move away from each other, magma rises in between, hardens and new ocean floor is created |
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| Folds in rock caused by compression, downward, troughlike folds. Looks like a sink |
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| Made of crust and upper mantle, makes up tectonic plates. |
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| Made of upper mantle, tectonic plates move on top of this. |
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| device, used to map the ocean floor, that detects small changes in magnetic fields |
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| a dark-gray to black fine-grained igneous rock |
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| changes in Earth’s magnetic field over geologic time, recorded in ocean-floor rocks and continental basalt flows |
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| study of Earth’s magnetic record using data gathered from iron-bearing minerals in rocks |
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| line on a map that connects points of the same age |
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| testable explanation of a situation |
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| huge slab of continental or oceanic crust and rigid upper mantle |
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| long, narrow depression caused by divergent boundary |
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extending in the same direction, everywhere equidistant, and
not meeting |
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