Byers Age of Eart Word Scramble
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Question | Answer |
Paleontology | Study of fossils |
Known Age | The age of an artifact as determined by a date printed on it or a reference to the artifact in a work of history. |
dendrochronology | the process of counting tree rings to determine the age of a tree. |
master tree ring pattern | groups of tree ring patterns that archaeologists catalog for specific global regions. |
radiometric dating | using radioactive process to determine the age of an item |
absolute age | the calculated age of an artifact from a specific dating method that is used to determine when the artifact was made. |
principle of superposition | when artifacts are found in rock or earth that is layered, the deeper layers hold the older artifacts |
relative age | age of something compared with the ages of other things |
strata | distinct layers |
permineralized/petrified | fossils in which teh spaces inside are filled with minerals from groundwater. |
carbonization | thin film of carbon residue preserved as a fossil |
carbonization | Common for most plant fossils. |
cast | type of fossil that forms when crystals fill a mold or sediments wash into a mold and harden into rock |
index fossils | remains of species that existed on Earth for a relatively short period of time, were abundant, and were widespread geographically |
Eon | formed by two or more geological eras form , which is the largest division of geologic time, lasting many hundreds of millions of years. |
era | comprised of two or more geological periods , which is hundreds of millions of years in duration. |
period | The basic unit of geological time in which a single type of rock system is formed, lasting tens of millions of years. |
Epoch | a division of a geologic period; it is the Smallest division of geologic time, lasting several million years. |
Age | A unit of geological time which is distinguished by some feature ,like ice. Shorter than epoch, usually lasting from a few million years to about a hundred million years. |
fossil | The preserved remains of a once-living organism. |
In what era did Homo Sapiens evolve? | Cenozoic |
In what era are Dinosaurs are dominant? | Mesozoic |
In what era are Amphibians Dominant? | Paleozoic |
In what period did Dinosaurs become extinct? | Cretaceous |
In what era do the following periods belong: Quaternary, Neogene, Paleogene? | Cenozoic |
In what era did the Appalachians beginto form? | Paleozoic |
In what period did the Paleozoic Era begin? | Cambrian |
What types of species appeared in the Cenozoic Era? | Humans, larger mammals |
What types of species appeared in the Mesozoic Era? | Small mammals,birds, dinosaurs, |
What types of species appeared in the Paleozoic Era? | Early reptiles,amphibians, fish, gymnosperms |
What types of species appeared in the Precambrian Era? | Worms, jellyfish |
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byersd2000
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