https://padlet.com/304420/u3crbvv5gqc7 Made with wonder en-us 2018-01-16 17:38:03 UTC 2024-09-30 06:52:10 UTC hello@padlet.com 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221806472 The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time.]]> 2018-01-16 17:40:47 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221806472 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221806708 In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock were formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers.]]> 2018-01-16 17:41:17 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221806708 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221807305 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.]]> 2018-01-16 17:42:24 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221807305 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221807515 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-16 17:42:52 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221807515 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221807834 The history of Earth concerns the development of planet Earth from its formation to the present day.]]> 2018-01-16 17:43:32 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221807834 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221807990 the time taken for the radioactivity of a specified isotope to fall to half its original value.]]> 2018-01-16 17:43:51 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221807990 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221808643 another term for carbon dating.]]> 2018-01-16 17:45:16 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221808643 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221808969 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-16 17:45:57 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221808969 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221809188 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.]]> 2018-01-16 17:46:26 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221809188 304420 https://padlet.com/304420/u3crbvv5gqc7/wish/221809411 The age of the Earth is approximately 4.54 ± 0.05 billion years (4.54 × 10⁹ years ± 1%). This dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.]]> 2018-01-16 17:46:53 UTC https://padlet.com/304420/u3crbvv5gqc7/wish/221809411