Earths impact on evolution & the history of earth by Richard Marquez https://padlet.com/304541/7zopavic74l9 Made with the best of intentions en-us 2018-01-16 21:46:45 UTC 2024-05-28 10:48:30 UTC hello@padlet.com geo time scale 304541 https://padlet.com/304541/7zopavic74l9/wish/221901658
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 21:53:19 UTC https://padlet.com/304541/7zopavic74l9/wish/221901658 rock strata 304541 https://padlet.com/304541/7zopavic74l9/wish/221901962 In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rockwhere formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers]]> 2018-01-16 21:54:25 UTC https://padlet.com/304541/7zopavic74l9/wish/221901962 half life 304541 https://padlet.com/304541/7zopavic74l9/wish/221902374 the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. 2. Also called biological half-life. Pharmacology. the time required for the activity of a substance taken into the body to lose one half its initial effectiveness.]]> 2018-01-16 21:55:52 UTC https://padlet.com/304541/7zopavic74l9/wish/221902374 fossils 304541 https://padlet.com/304541/7zopavic74l9/wish/221903045 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-16 21:58:44 UTC https://padlet.com/304541/7zopavic74l9/wish/221903045 history of planet earth 304541 https://padlet.com/304541/7zopavic74l9/wish/221903304 The history of Earth concerns the development of planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to the understanding of the main events of Earth's past. The age of the Earth is approximately one-third of the age of the universe.]]> 2018-01-16 21:59:58 UTC https://padlet.com/304541/7zopavic74l9/wish/221903304 rock cycle 304541 https://padlet.com/304541/7zopavic74l9/wish/221903764 The history of Earth concerns the development of planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to the understanding of the main events of Earth's past. The age of the Earth is approximately one-third of the age of the universe.]]> 2018-01-16 22:01:41 UTC https://padlet.com/304541/7zopavic74l9/wish/221903764 radiometric dating 304541 https://padlet.com/304541/7zopavic74l9/wish/221904207 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-16 22:03:29 UTC https://padlet.com/304541/7zopavic74l9/wish/221904207 carbon dating 304541 https://padlet.com/304541/7zopavic74l9/wish/221904524 another term for carbon dating.]]> 2018-01-16 22:05:06 UTC https://padlet.com/304541/7zopavic74l9/wish/221904524 radioactive decay 304541 https://padlet.com/304541/7zopavic74l9/wish/221904840 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.]]> 2018-01-16 22:06:33 UTC https://padlet.com/304541/7zopavic74l9/wish/221904840 age of earth 304541 https://padlet.com/304541/7zopavic74l9/wish/221905185 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 22:08:33 UTC https://padlet.com/304541/7zopavic74l9/wish/221905185