https://padlet.com/Kasslie/zopjty83noot Made with science en-us 2018-01-22 18:19:55 UTC 2018-01-22 18:58:36 UTC hello@padlet.com Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223477871 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. The tables of geologic time spans, presented here, agree with the nomenclature, dates and standard color codes set forth by the International Commission on Stratigraphy (ICS).]]> 2018-01-22 18:23:09 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223477871 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223479791 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.]]> 2018-01-22 18:26:06 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223479791 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223480890 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.]]> 2018-01-22 18:27:51 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223480890 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223481521 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-22 18:28:37 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223481521 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223482474 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.]]> 2018-01-22 18:30:00 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223482474 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223483113 the time taken for the radioactivity of a specified isotope to fall to half its original value.]]> 2018-01-22 18:31:01 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223483113 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223484127 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-22 18:32:33 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223484127 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223484830 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.]]> 2018-01-22 18:33:35 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223484830 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223485641 Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron]]> 2018-01-22 18:34:47 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223485641 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223486132 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.]]> 2018-01-22 18:35:41 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223486132 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223487284 Mercury is the smallest and innermost planet in the Solar System. Its orbital period around the Sun of 88 days is the shortest of all the planets in the Solar System. It is named after the Roman deity Mercury, the messenger to the gods]]> 2018-01-22 18:37:36 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223487284 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223487813 Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. It has the longest rotation period of any planet in the Solar System and rotates in the opposite direction to most other planets. It has no natural satellites.]]> 2018-01-22 18:38:29 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223487813 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223488286 Earth is the third planet from the Sun and the only object in the Universe known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4 billion years ago.]]> 2018-01-22 18:39:14 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223488286 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223489147 Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury. In English, Mars carries a name of the Roman god of war, and is often referred to as the "Red Planet" because the reddish iron oxide prevalent on its surface gives it a reddish appearance that is distinctive]]> 2018-01-22 18:40:30 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223489147 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223490495 Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, but two-and-a-half times that of all the other planets in the Solar System combined.]]> 2018-01-22 18:42:30 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223490495 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223491691 Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius about nine times that of Earth.]]> 2018-01-22 18:44:09 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223491691 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223492571 uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System.]]> 2018-01-22 18:45:26 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223492571 Kasslie https://padlet.com/Kasslie/zopjty83noot/wish/223493472 Neptune is the eighth and farthest known planet from the Sun in the Solar System. In the Solar System, it is the fourth-largest planet by diameter, the third-most-massive planet, and the densest giant planet.]]> 2018-01-22 18:46:37 UTC https://padlet.com/Kasslie/zopjty83noot/wish/223493472