padlet c earths impact on evolution by Starlene Mendoza https://padlet.com/3099941/f6jvpypveqbj Made by starlene mendoza en-us 2018-01-23 20:06:21 UTC 2018-01-23 20:17:37 UTC hello@padlet.com geological time scale 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223994270  a system of chronological dating that relates geological strata (stratigraphy) to time. It is used by geologists, paleontologists, and other Eart
]]> 2018-01-23 20:07:59 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223994270 rock strata 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223994623

In geology and related fields, a stratum (plural: strata) is a layer of sedimentary rock or soil, or igneous rockthat were formed at the earth's surface, with internally consistent characteristics that distinguish it from other layers.
]]> 2018-01-23 20:08:46 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223994623 rock cycle 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223995083 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.
]]> 2018-01-23 20:09:48 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223995083 fossils 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223995419 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
]]> 2018-01-23 20:10:32 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223995419 half life 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223996983 the time taken for the radioactivity of a specified isotope to fall to half its original value.
  • the time required for any specified property (e.g., the concentration of a substance in the body) to decrease by half.
]]> 2018-01-23 20:13:26 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223996983 radiometric dating 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223997371
  • a method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample

    • ]]>     2018-01-23 20:14:09 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223997371     radiocarbon dating 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223998276 another term for carbon dating.
    ]]>     2018-01-23 20:15:53 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223998276     radioactive decay 3099941 https://padlet.com/3099941/f6jvpypveqbj/wish/223998825 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.
    ]]>     2018-01-23 20:16:59 UTC https://padlet.com/3099941/f6jvpypveqbj/wish/223998825