Fossil Types - Mold, Cast, petrified, preserved, carbonized, trace, Evidence from Fossils - Evidence of how life and conditions have changed, Fossils - Preserved remains of an organism from the past, Precambrian Era - Earth's first era of time; formation of Earth, major Events of the Precambrian Era - Formation of sun, creation of Earth, atmosphere, oceans and life, Paleozoic Era - Early invertebrates (trilobites); ended with mass extinction, Law of Superposition - Newer rock layers form above older rock layers, Cenozoic Era - New mammals; flowering plants; humans, Mesozoic Era - Reptiles, dinosaurs, small mammals, Ice Cores - Drilled out of glaciers; indicate climate change throughout history, Radiometric Dating - Used to estimate age of rocks, Index Fossils - Helpful in determining relative age of rock, Sedimentary Rock - Formed from collection of sediment on Earth's surface, Fault - Break in rocks of Earth's crust; formed from movement, Dip Slip Fault - Change in vertical position of rock, Strike Slip Fault - Caused by a change in horizontal position of rock, Igneous Rock - Formed from the cooling of magma, Metamorphic Rock - Formed from another rock with heat or pressure, Geology - Study of rocks on and within the Earth, Biodiversity - The variety of life on Earth, Fossil Record - Evidence from all discovered fossils,
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Earth History 8th grade Vocabulary
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Southes
G8
Science
Geologic processes and history
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