https://padlet.com/3097631/sbc71hijwp0e Made with a wish on a star en-us 2018-01-23 18:35:39 UTC 2026-01-18 21:31:01 UTC hello@padlet.com 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/223943674 The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time]]> 2018-01-23 18:41:26 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/223943674 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224758090 In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock thatthat were formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers.]]> 2018-01-25 17:09:17 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224758090 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224760161 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.]]> 2018-01-25 17:13:01 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224760161 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224761200 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-25 17:14:45 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224761200 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224762071 the time taken for the radioactivity of a specified isotope to fall to half its original value.]]> 2018-01-25 17:16:11 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224762071 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224762736 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-25 17:17:24 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224762736 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224763859 another term for carbon dating.]]> 2018-01-25 17:19:17 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224763859 3097631 https://padlet.com/3097631/sbc71hijwp0e/wish/224764455 Radioactive decay (also known as nuclear decay orof radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron]]> 2018-01-25 17:20:12 UTC https://padlet.com/3097631/sbc71hijwp0e/wish/224764455