https://padlet.com/304958/3jjeukn5di1p Made with science en-us 2018-01-30 16:21:06 UTC 2026-01-25 18:28:20 UTC hello@padlet.com 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226170706 Uniformitarianism is a geological doctrine. It states that current geologic processes, occurring at the same rates observed today, in the same manner, account for all of Earth's geological features. Thus, it assumes that geological processes are essentially unchanged today from those of the unobservable past, and that there have been no cataclysmic events in earth's history. As present processes are thought to explain all past events, the Uniformitarian slogan is, "the present is the key to the past."]]> 2018-01-30 16:23:29 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226170706 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226171602 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 16:24:40 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226171602 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226172016 Organisms buried in sediment may decay or dissolve away leaving a cavity or mold. If the space is subsequently filled with sediment, an external cost can be made. Molds and casts are three dimensional and preserve the surface contours of the organism.]]> 2018-01-30 16:25:15 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226172016 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226172824 In geology, petrifaction or petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.]]> 2018-01-30 16:26:16 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226172824 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226173439 A fossil trackway is a type of trace fossil, a trackway made by an organism. ... Marine organisms also made many ancient trackways (such as the trails of trilobites and eurypterids like Hibbertopterus). Some basic fossil trackway types: footprints. tail drags.]]> 2018-01-30 16:27:07 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226173439 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226174802 A mold is the impression and void (space, hole) that an organism or organism's body or body part leaves in the sediment. ... A cast is made of different material than a mold. Both casts and molds are types of fossils. Sometimes the mold and cast are found together, although molds are more than casts.]]> 2018-01-30 16:29:12 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226174802 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226176370 Relative Dating of rock layers tells us that the deeper we dig - the older the rock gets.]]> 2018-01-30 16:31:31 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226176370 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226177138 History of rock and fossils

]]> 2018-01-30 16:32:30 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226177138 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226177547 Paleontologist believe it is 4.6 Billion Years Old

]]> 2018-01-30 16:33:03 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226177547 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226177984 A bug stuck in amber ]]> 2018-01-30 16:33:37 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226177984 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226178710 Fossils forms in this layer]]> 2018-01-30 16:34:43 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226178710 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226179094 law of superposition. noun. Geology. 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 16:35:14 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226179094 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226179494 Paleozoic, Cenozoic, and Mesozoic]]> 2018-01-30 16:35:45 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226179494 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226179924 the time we are currently in]]> 2018-01-30 16:36:17 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226179924 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226180310 In geology, petrifaction or petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.]]> 2018-01-30 16:36:49 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226180310 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226181204 a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself]]> 2018-01-30 16:38:02 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226181204 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226181473 A metamorphic rock is a type of rock which has been changed by extreme heat and pressure. Its name is from 'morph' (meaning form), and 'meta'(meaningchange). The original rock gets heated (temperatures greater than 150 to 200 °C) and pressured (1500 bars). This causes profound physical and/or chemical change.]]> 2018-01-30 16:38:25 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226181473 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226182061 Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice ( glaciers ), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils. Note : Limestone and shale are common sedimentary rocks.]]> 2018-01-30 16:39:15 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226182061 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226182548 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 16:39:53 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226182548 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226182858 A cast is a replica of something ]]> 2018-01-30 16:40:18 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226182858 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226183187 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 16:40:46 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226183187 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226183719 Epochs, Periods, Eras, Eons ]]> 2018-01-30 16:41:28 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226183719 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226184380 The Holocene is the current geological epoch. It began after the Pleistocene, approximately 11,700 years before present. The Holocene is part of the Quaternary period]]> 2018-01-30 16:42:26 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226184380 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226184585 Study of follicles ]]> 2018-01-30 16:42:46 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226184585 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226184880 The age when the rock is formed ]]> 2018-01-30 16:43:12 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226184880 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226185141 living things die and their remains are covered by sediments]]> 2018-01-30 16:43:38 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226185141 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226185757 the preserved remains of an organism]]> 2018-01-30 16:44:19 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226185757 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226186085 Mesozoic]]> 2018-01-30 16:44:41 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226186085 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226186366 Precambrian]]> 2018-01-30 16:45:02 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226186366 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226186602 when dinosaurs thrived]]> 2018-01-30 16:45:22 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226186602 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226186918 the longest of all eras]]> 2018-01-30 16:45:46 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226186918 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226187239 Age of Mammals]]> 2018-01-30 16:46:11 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226187239 304958 https://padlet.com/304958/3jjeukn5di1p/wish/226187570 The earth is constistitaly changing ]]> 2018-01-30 16:46:38 UTC https://padlet.com/304958/3jjeukn5di1p/wish/226187570