https://padlet.com/303395/5krm1u00zldu Andrea Lucio P.5 1/23/18 en-us 2018-01-23 20:09:17 UTC 2018-01-23 20:26:28 UTC hello@padlet.com 303395 https://padlet.com/303395/5krm1u00zldu/wish/223998025 The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.]]> 2018-01-23 20:15:22 UTC https://padlet.com/303395/5krm1u00zldu/wish/223998025 303395 https://padlet.com/303395/5krm1u00zldu/wish/223998307 Geology. a single bed of sedimentary rock, generally consisting of one kind of matter representing continuous deposition.]]> 2018-01-23 20:15:56 UTC https://padlet.com/303395/5krm1u00zldu/wish/223998307 303395 https://padlet.com/303395/5krm1u00zldu/wish/223999183 an idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.]]> 2018-01-23 20:17:45 UTC https://padlet.com/303395/5krm1u00zldu/wish/223999183 303395 https://padlet.com/303395/5krm1u00zldu/wish/223999395 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-23 20:18:13 UTC https://padlet.com/303395/5krm1u00zldu/wish/223999395 303395 https://padlet.com/303395/5krm1u00zldu/wish/223999930 The time taken for the radioactivity of a specified isotope to fall to half its original value.]]> 2018-01-23 20:19:26 UTC https://padlet.com/303395/5krm1u00zldu/wish/223999930 303395 https://padlet.com/303395/5krm1u00zldu/wish/224000244 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-23 20:20:06 UTC https://padlet.com/303395/5krm1u00zldu/wish/224000244 303395 https://padlet.com/303395/5krm1u00zldu/wish/224000505 the determination of the age or date of organic matter from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains. The ratio between them changes as radioactive carbon-14 decays and is not replaced by exchange with the atmosphere.]]> 2018-01-23 20:20:42 UTC https://padlet.com/303395/5krm1u00zldu/wish/224000505 303395 https://padlet.com/303395/5krm1u00zldu/wish/224001169 radioactive decay. (rā'dē-ō-āk'tĭv) The spontaneous transformation of an unstable atomic nucleus into a lighter one, in which radiation is released in the form of alpha particles, beta particles, gamma rays, and other particles.]]> 2018-01-23 20:22:13 UTC https://padlet.com/303395/5krm1u00zldu/wish/224001169