geology study - Structure and layers of the earth- inner...

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Structure and layers of the earth- inner and outer core, inner and outer mantle, the crust- oceanic and continental Plate tectonics- comes from a theory of continental drift, different plates of the earth. 3 main types of plate boundry- divergent, convergent, transform geologic dating- rocks record events in history. geologic dating methods- law of superposition, principle of original horizontality, cross cutting relationships, inclusions (rocks within other rocks), correlation of rock layers with fossils, Relative dating- determining whether something is older or younger than something else. Absolute dating- is based upon the fact that atoms of radioactive elements decay to form stable isotopes. Can determine a more exact age. Stratigraphic principles- Half-lives- is the period of time it takes for a substance to decrease by half after decay. Topographic maps- show contour lines (elevation) they cover a small area of land.
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geology study - Structure and layers of the earth- inner...

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