Methods of dating minerals and materials can be used to determine their age.
There are 12 flash cards in this set (2 pages to print.)
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Sample flash cards in this set:
|Fluorine Dating||A relative (chemical) dating method that compares the accumulation of fluorine in animal and human bones from the same site.|
|Chemical Dating||Dating methods that use predictable chemical changes that occur over time.|
|Index fossils||Fossils that are from specified time ranges, are found in multiple locations, and can be used to determine the age of associated strata.|
|Cultural Dating||Relative dating methods that are based on material remains' time spans.|
|Pebble Tools||The earliest stone tools, in which simple flakes were knocked off to produce an edge used for cutting and scraping.|
|Dendrochronology||A chronometric dating method that uses a tree-ring count to determine numerical age|
|Radiocarbon Dating||The radiometric dating method in which the ratio of 14C to 12C is measured to provide an absolute date for a material younger than 50,000 years.|
|Isotopes||Two or more forms of a chemical element that vary in the number of neutrons in the nucleus and by the atomic mass.|
|Half-Life||The time it takes for half of the radioisotopes in a substance to decay; used in various radiometric dating methods.|
|Igneous||Rock formed from the crystallization of molten magma, which contains the radioisotope 40K; used in potassium-argon dating.|
|Radiopotassium Dating||The radiometric dating method in which the ratio of 40K to 40Ar is measured to provide an absolute date for a material older than 200,000 years.|
|Fission Track Dating||An absolute dating method based on the measurement of the number of tracks left by the decay of uranium-238|