https://padlet.com/3044311/2d521o53g8cj Made with the help of a typing monkey en-us 2018-01-22 18:17:29 UTC 2023-03-01 06:02:36 UTC hello@padlet.com 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223475458  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.]]> 2018-01-22 18:18:55 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223475458 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223475858 In geology and related fields, a stratum (plural: strata) 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 18:19:38 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223475858 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223476346 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, and further igneous intrusion.]]> 2018-01-22 18:20:23 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223476346 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223476598 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-22 18:20:48 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223476598 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223476839 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 18:21:14 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223476839 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223477106 the time taken for the radioactivity of a specified isotope to fall to half its original value.

]]> 2018-01-22 18:21:45 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223477106 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223477586 a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample.]]> 2018-01-22 18:22:39 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223477586 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223477970 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 18:23:19 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223477970 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223478379 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.]]> 2018-01-22 18:24:02 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223478379 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223478739 he 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 18:24:25 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223478739 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223479088 the chemical element of atomic number 80, a heavy silvery-white metal that is liquid at ordinary temperatures.]]> 2018-01-22 18:24:58 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223479088 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223479493 the second planet from the sun, is named for the Roman goddess of love and beauty. The planet — the only planet named after a female — may have been named for the most beautiful deity of her pantheon because it shone the brightest of the five planets known to ancient astronomers]]> 2018-01-22 18:25:35 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223479493 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223480719 the planet on which we live; the world.]]> 2018-01-22 18:27:32 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223480719 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223481519 The Roman name of Ares, the Greek and Roman god of war. Note: The fourth planet from the sun (the Earth is third) is named Mars, possibly because its red color is reminiscent of blood.]]> 2018-01-22 18:28:37 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223481519 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223482234 Juno mission to Jupiter portray the largest planet in our solar system as a complex, gigantic, turbulent world, with Earth-sized polar cyclones, plunging storm systems that travel deep into the heart of the gas giant]]> 2018-01-22 18:29:41 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223482234 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223482788 The Huygens probe descended through Titan's atmosphere in January 2005, collecting data on the atmosphere and surface. Cassini has orbited Saturn more than 70 times during a 12-year study of the planet and its moons, rings, and magnetosphere.]]> 2018-01-22 18:30:31 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223482788 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223483044 with no solid surface, is one of the gas giant planets. (The others are Jupiter, Saturn, and Neptune.) Its atmosphere is composed primarily of hydrogen and helium, with a small amount of methane and traces of water and ammonia.]]> 2018-01-22 18:30:53 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223483044 3044311 https://padlet.com/3044311/2d521o53g8cj/wish/223483396 The planet's blue color comes from methane in the atmosphere and another component that's a mystery to astronomers. Neptune's largest moon, Triton, hovers beneath the planet in this image taken by Voyager 2 in 1989. ... Beneath it is the bright white feature that Voyager scientist nicknamed "Scooter."]]> 2018-01-22 18:31:26 UTC https://padlet.com/3044311/2d521o53g8cj/wish/223483396