https://padlet.com/3047781/iaajuzkmamuw Made with good vibes en-us 2018-01-16 20:14:43 UTC 2023-07-03 17:11:07 UTC hello@padlet.com 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221875020 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.]]> 2018-01-16 20:17:10 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221875020 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221875086 n geology and related fields, a stratum is a layer of sedimentary rock or soil, or igneous rock where formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers.]]> 2018-01-16 20:17:22 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221875086 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221875179 the time taken for the radioactivity of a specified isotope to fall to half its original value.]]> 2018-01-16 20:17:40 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221875179 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221875350 A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, hair, petrified wood, oil, coal, and DNA remnants.]]> 2018-01-16 20:18:03 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221875350 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221876308 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.]]> 2018-01-16 20:20:55 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221876308 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221876480 Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.]]> 2018-01-16 20:21:25 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221876480 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221876568 Radiocarbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. ]]> 2018-01-16 20:21:40 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221876568 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221876815 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 20:22:26 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221876815 3047781 https://padlet.com/3047781/iaajuzkmamuw/wish/221876886 4.54 billion years old]]> 2018-01-16 20:22:38 UTC https://padlet.com/3047781/iaajuzkmamuw/wish/221876886