https://padlet.com/305153/gqhunujb2ncl Made with a lightning strike of genius en-us 2018-01-30 18:17:41 UTC 2026-02-02 05:48:56 UTC hello@padlet.com 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226248047 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 18:21:01 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226248047 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226250165  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 18:24:22 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226250165 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226251037 Organisms buried in sediment may decay or dissolve away leaving a cavity or mold.]]> 2018-01-30 18:25:48 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226251037 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226252163 Petrified wood is the name given to a special type of fossilized remains of terrestrial vegetation.]]> 2018-01-30 18:27:37 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226252163 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226253120 A fossil trackway is a type of trace fossil, a trackway made by an organism.]]> 2018-01-30 18:29:03 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226253120 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226254170 mold.

]]> 2018-01-30 18:30:53 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226254170 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226256762 The older the rock gets.]]> 2018-01-30 18:35:01 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226256762 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226257716 Geologic Time Scale.

]]> 2018-01-30 18:36:45 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226257716 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226258454  Paleontologist believe it is 4.6 Billion Years Old.

]]> 2018-01-30 18:37:59 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226258454 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226259200 Preserved remains.]]> 2018-01-30 18:39:13 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226259200 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226259842 fossils forms in this layer.

]]> 2018-01-30 18:40:16 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226259842 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226260972 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 18:42:11 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226260972 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226261394 Is a 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 18:42:52 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226261394 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226261663 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 18:43:19 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226261663 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226261883 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 18:43:46 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226261883 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226262094 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 18:44:08 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226262094 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226262292 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.The earth is constantly changing. ]]> 2018-01-30 18:44:25 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226262292 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226262591 relating to or denoting the present epoch, which is the second epoch in the Quaternary period and followed the Pleistocene.]]> 2018-01-30 18:44:54 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226262591 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226262813 Absolute dating is the process of determining an age on a specified chronology in archaeology and geology. ]]> 2018-01-30 18:45:18 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226262813 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226263268 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 18:46:01 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226263268 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226263786 relating to or denoting the era between the Paleozoic and Cenozoic eras, comprising the Triassic, Jurassic, and Cretaceous periods.]]> 2018-01-30 18:46:54 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226263786 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226264020 A paleontologist is a scientist who studies fossils.]]> 2018-01-30 18:47:17 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226264020 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226264355 living things die and their remains are covered by sediments.]]> 2018-01-30 18:47:49 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226264355 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226266309 relating to or denoting the most recent era, following the Mesozoic era and comprising the Tertiary and Quaternary periods.]]> 2018-01-30 18:50:58 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226266309 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226266780 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 18:51:39 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226266780 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226267495 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.]]> 2018-01-30 18:52:50 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226267495 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226268269 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 18:54:01 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226268269 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226268472 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 18:54:21 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226268472 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226268954 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 18:55:04 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226268954 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226269923 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 18:56:40 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226269923 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226270473 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 18:57:34 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226270473 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226271137 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 18:58:38 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226271137 305153 https://padlet.com/305153/gqhunujb2ncl/wish/226272920 2018-01-30 19:01:37 UTC https://padlet.com/305153/gqhunujb2ncl/wish/226272920