Earth's Impact on Evolution, History of Earth by Emely Villasenor https://padlet.com/3039561/ju9b9f5i92ey Made with a bold sensibility en-us 2018-01-16 18:29:48 UTC 2023-04-27 09:29:18 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Pictureland.png Geologic Time Scale 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221829783 The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time. An example of this would be 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 18:32:29 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221829783 Rock Strata 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221831124 In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rock where formed at the earth's surface. For example, it internally consistent characteristics that distinguish it from other layers.

 
]]> 2018-01-16 18:35:50 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221831124 Rock Cycle 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221832609 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. An example of this is, further igneous intrusion.]]> 2018-01-16 18:39:20 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221832609 Fossils 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221833350 The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. For example, we could detect fossils in the cornerstone of the building. ]]> 2018-01-16 18:40:59 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221833350 History of Planet Earth 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221834348 The history of Earth concerns the development of planet Earth from its formation to the present day.  For example, 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 18:42:53 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221834348 Half life 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221835017 The time taken for the radioactivity of a specified isotope to fall to half its original value. For example, the time required for any specified property (e.g., the concentration of a substance in the body) to decrease by half.]]> 2018-01-16 18:44:10 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221835017 Radiometric dating 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221836020 A method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes. For example, is a present in a sample.]]> 2018-01-16 18:46:09 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221836020 Radiocarbon Dating 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221837123 The determination of the age or date of organic matter from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains. For example, the ratio between them changes as radioactive carbon-14 decays and is not replaced by exchange with the atmosphere.

]]> 2018-01-16 18:48:26 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221837123 Radioactive Decay 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221837721 The spontaneous transformation of an unstable atomic nucleus into a lighter one, in which radiation is released. For example, the form of alpha particles, beta particles, gamma rays, and other particles.]]> 2018-01-16 18:49:49 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221837721 Age of Earth 3039561 https://padlet.com/3039561/ju9b9f5i92ey/wish/221838375 The age of the Earth is approximately 4.54 ± 0.05 billion years. For example, 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 18:51:11 UTC https://padlet.com/3039561/ju9b9f5i92ey/wish/221838375