https://padlet.com/304931/xhvknkl3tkbt Made with love en-us 2018-01-30 18:15:52 UTC 2024-06-16 13:07:31 UTC hello@padlet.com 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226246770 relating to or denoting the present epoch, which is the second epoch in the Quaternary period and followed the Pleistocene.]]> 2018-01-30 18:19:07 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226246770 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226248266 A paleontologist is a scientist who studies fossils.]]> 2018-01-30 18:21:16 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226248266 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226249163 Absolute dating is the process of determining an age on a specified chronology in archaeology and geology. ]]> 2018-01-30 18:22:37 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226249163 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226250018

living things die and their remains are covered by sediments.

]]> 2018-01-30 18:24:08 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226250018 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226251251 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-30 18:26:10 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226251251 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226252567 of, relating to, or being the period of the Mesozoic era between the Triassic and the Cretaceous or the corresponding system of rocks marked by the presence of dinosaurs and the first appearance of birds — see Geologic Time Table.]]> 2018-01-30 18:28:10 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226252567 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226253826 The age of the Earth is about 4.54 billion years; the earliest undisputed evidence of life on Earth dates from at least 3.5 billion years ago. There is evidence that life began much ]]> 2018-01-30 18:30:21 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226253826 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226254810 relating to or denoting the era between the Paleozoic and Cenozoic eras, comprising the Triassic, Jurassic, and Cretaceous periods.]]> 2018-01-30 18:31:55 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226254810 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226255837 relating to or denoting the earliest eon, preceding the Cambrian period and the Phanerozoic eon.

• the Precambrian eon or the system of rocks deposited during it.

]]> 2018-01-30 18:33:31 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226255837 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226257128 relating to or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods.]]> 2018-01-30 18:35:43 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226257128 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226257744 Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions, and earthquakes.]]> 2018-01-30 18:36:49 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226257744 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226259995 The Eras are the next largest interval units into which the Geologic Time is divided and represented on the chart. Eras encompass major intervals of Time and are defined based on the fossil life-forms found in the rock layers, and the Law of Superposition. ... The Paleozoic Era, the Mesozoic Era, and the Cenozoic Era.]]> 2018-01-30 18:40:33 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226259995 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260079 Petrified fossils form when minerals replace all or part of an organism. Water is full of dissolved minerals. It seeps through the layers of sediment to reach the dead organism. When the water evaporates, only the hardened minerals are left behind.]]> 2018-01-30 18:40:41 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260079 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260151 a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.]]> 2018-01-30 18:40:49 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260151 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260211 A trace fossil, also ichnofossil, is a geological record of biological activity. Trace fossils may consist of impressions made on the substrate by an organism: for example, burrows, borings, urolites, footprints and feeding marks, and root cavities.]]> 2018-01-30 18:40:56 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260211 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260261 Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical or chemical change.]]> 2018-01-30 18:41:01 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260261 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260321 Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water.]]> 2018-01-30 18:41:07 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260321 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260374 Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava.

]]> 2018-01-30 18:41:12 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260374 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260421 Cast - is a replica.Replica casts are created by molding and then casting an original fossil so all of the detail is preserved, but the original is safely stored in a museum or other responsible collection. ... Sometimes replicas are made by reconstructing partial casts or by paleo-artists who sculpt fossils based on scientific references.]]> 2018-01-30 18:41:17 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260421 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226260459 In physics and systems theory, the superposition principle, also known as superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.]]> 2018-01-30 18:41:22 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226260459 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262030 From largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages. ... The time before the Phanerozoic is usually referred to as the Precambrian and is usually divided into the three eons shown. The Phanerozoic is subdivided into three major divisions: the Cenozoic, Mesozoic, and Paleozoic Eras.]]> 2018-01-30 18:44:01 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262030 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262470 Preserved remains.]]> 2018-01-30 18:44:44 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262470 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262566  Paleontologist believe it is 4.6 Billion Years Old.

]]> 2018-01-30 18:44:51 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262566 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262669 The older the rock gets.]]> 2018-01-30 18:45:02 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262669 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262758 Petrified wood is the name given to a special type of fossilized remains of terrestrial vegetation.]]> 2018-01-30 18:45:12 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262758 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262841 mold.

]]> 2018-01-30 18:45:20 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262841 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262932 Geologic Time Scale.

]]> 2018-01-30 18:45:29 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262932 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226262981 Organisms buried in sediment may decay or dissolve away leaving a cavity or mold.]]> 2018-01-30 18:45:34 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226262981 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226263035 A fossil trackway is a type of trace fossil, a trackway made by an organism.]]> 2018-01-30 18:45:39 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226263035 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226263092 The fundamental principle or doctrine that geologic processes and natural laws now operating to modify the Earth's crust have acted in the same regular manner and with essentially the same intensity throughout geologic time.]]> 2018-01-30 18:45:45 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226263092 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/226263182  Superposition property, states that, for all linear systems, the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.]]> 2018-01-30 18:45:55 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/226263182 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/227214896 he other two are the Mesozoic and Paleozoic Eras. The Cenozoic spans only about 65 million years, from the end of the Cretaceous Period and the extinction of non-avian dinosaurs to the present. The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time.]]> 2018-02-01 18:46:09 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/227214896 304931 https://padlet.com/304931/xhvknkl3tkbt/wish/227216130 The earth is CONSTANTLY CHANGINg over the course of billions of years. ]]> 2018-02-01 18:48:15 UTC https://padlet.com/304931/xhvknkl3tkbt/wish/227216130