https://padlet.com/304503/9yfz7ozth20r 8-26-18 Period 1 en-us 2018-04-26 15:20:44 UTC 2023-03-07 07:16:24 UTC hello@padlet.com 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255695338 the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.

]]> 2018-04-26 15:24:03 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255695338 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255696133 compaction. (kəm-pāk'shən) The process by which the porosity of a given form of sediment is decreased as a result of its mineral grains being squeezed together by the weight of overlying sediment or by mechanical means. The American Heritage.]]> 2018-04-26 15:25:43 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255696133 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255697348 a process of altering a metal by heating it in contact with a powdered solid, especially a former method of making steel by heating iron in contact with charcoal.]]> 2018-04-26 15:28:01 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255697348 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255698423 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.]]> 2018-04-26 15:30:05 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255698423 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255698845 the process of eroding or being eroded by wind, water, or other natural agents.]]> 2018-04-26 15:30:52 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255698845 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255699704 wear away or change the appearance or texture of (something) by long exposure to the air.]]> 2018-04-26 15:32:41 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255699704 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255700347 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.]]> 2018-04-26 15:33:54 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255700347 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255700853 metamorphic rock definition. Rock that was once one form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase. Note : Examples are marble, which can be formed from limestone, and slate, which is formed from shale.]]> 2018-04-26 15:35:03 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255700853 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255701490 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.]]> 2018-04-26 15:36:17 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255701490 304503 https://padlet.com/304503/9yfz7ozth20r/wish/255702060 Igneous rock (derived from the Latin word ignis meaning fire), 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.]]> 2018-04-26 15:37:30 UTC https://padlet.com/304503/9yfz7ozth20r/wish/255702060