https://padlet.com/3055531/ncba6arxo7uw Made with big dreams en-us 2018-01-30 16:34:09 UTC 2018-01-30 17:09:21 UTC hello@padlet.com 3055531 https://padlet.com/3055531/ncba6arxo7uw/wish/226187686 Uniformitarianism is defined in the authoritative Glossary of Geology as "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, and that past ]]> 2018-01-30 16:46:46 UTC https://padlet.com/3055531/ncba6arxo7uw/wish/226187686 3055531 https://padlet.com/3055531/ncba6arxo7uw/wish/226189000 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 16:48:36 UTC https://padlet.com/3055531/ncba6arxo7uw/wish/226189000 3055531 https://padlet.com/3055531/ncba6arxo7uw/wish/226190469 Organisms buried in sediment may decay or dissolve away leaving a cavity or mold. If the space is subsequently filled with sediment, an external castcan be made. Molds and casts are three dimensional and preserve the surface contours of the organism.]]> 2018-01-30 16:50:37 UTC https://padlet.com/3055531/ncba6arxo7uw/wish/226190469 3055531 https://padlet.com/3055531/ncba6arxo7uw/wish/226194750 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 16:57:07 UTC https://padlet.com/3055531/ncba6arxo7uw/wish/226194750 3055531 https://padlet.com/3055531/ncba6arxo7uw/wish/226202260 A fossil trackway is a type of trace fossil, a trackway made by an organism. Many fossil trackways were made by dinosaurs, early tetrapods, and other quadrupeds and bipeds on land. ]]> 2018-01-30 17:08:49 UTC https://padlet.com/3055531/ncba6arxo7uw/wish/226202260