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Sci-8-Unit4.1

Sci-8-Unit4.1- Geologic Change over Time

TermDefinition
uniformitarianism the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.
catastrophism the theory that changes in the earth's crust during geological history have resulted chiefly from sudden violent and unusual events.
fossils trace remains of an organism that lived long ago, most commonly preserved in sedimentary rock.
amber fossil when an organism is trapped in tree sap as it hardens
asphalt fossils when an organism is trapped in tar that bubbles up to Earth's surface
petrification when an organisms tissues are replaced by minerals
trace fossil evidence of the behavior of on organism left in soft sediment such as footprints, tracks, burros.
fossil record the total number of fossils that have been discovered, as well as to the information learned from them.
sandstone sedimentary rock made of compacted sand
coal sedimentary rock made of compressed organic material
Pangaea the large landmass made up of all the current continents before they broke apart.
climate weather conditions over a long period of time for a specific region
ice core A long cylinder of ice that contains organisms and gasses from ancient environments
Popular Earth Science sets

 

 



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