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study stake ch. 7

Continental drift when lithospheric plates move
uniformitarianism states that Earth's process that are at work today were at work in the past
superposition states that the layers of rocks are stacked oldest on the bottom and young on top
sedimentary rock rock formed from sediment
Pangea ancient theory of super continent that began breaking up 200 million years ago
Plate tectonics theory that explains how lithospheric plates move and interact causing major geologic features
fossil record information about what an oranisim looks like, where it lives and how it envolved
absolute dating calculated by using half-time of certain isotopes
estimation an approximate calculation of a quantity
radioactive decay when an unstable atomic nucleus changes to another nucleus by emitting practice
igneous rocks magma that has been solid
relative dating age based on subject found at the same site
half-life time it take a give amount of a radioactive isotope to decay half it's original mass
atoms the building blocks of all matter
index fossil fossilized remains of a organism that existed over vast area for a short period of time
Created by: 200608338