https://padlet.com/304006/bqa5ohvx94wk Made with a dash of wit en-us 2018-01-23 17:37:32 UTC 2025-02-18 23:48:49 UTC hello@padlet.com 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223905253 The geologic time scale is a system of chronological dating that relates geological strata to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing ]]> 2018-01-23 17:39:26 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223905253 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223905427 In geology and related fields, a stratum is a layer of sedimentary rock or soil, or igneous rock that were formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers.]]> 2018-01-23 17:39:45 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223905427 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223905477 The Rock Cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into metamorphic rock or into igneous rock. Metamorphic rock can change into igneous or sedimentary rock. Igneous rock forms when magma cools and makes crystals.]]> 2018-01-23 17:39:52 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223905477 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223905596 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-23 17:40:04 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223905596 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223905772 the time taken for the radioactivity of a specified isotope to fall to half its original value.the time required for any specified property (e.g., the concentration of a substance in the body) to decrease by half.]]> 2018-01-23 17:40:20 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223905772 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223906051 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-23 17:40:47 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223906051 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223906359 another term for carbon dating.]]> 2018-01-23 17:41:15 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223906359 304006 https://padlet.com/304006/bqa5ohvx94wk/wish/223906592 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 17:41:37 UTC https://padlet.com/304006/bqa5ohvx94wk/wish/223906592