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s.m/ 8.2 vocab

TermDefinition
Antibiotic/ Physical Factors Non-living factors such as erosion, wind, and sun exposure
Benthic Living at the bottom of the ocean or on the ocean floor
Biological/ Biotic Factors Living factors such as decomposers, scavengers, and predators
Body Fossil Body parts of organisms that become fossils, such as bones, teeth,skin, leaves, tree trunks
Cast Casts are formed when sediment leaks into a mold and hardens to form a copy of the original structure
Compression Fossils formed when an organism is flattened (compressed), leaving a dark stain in the rock
Coprolite Fossilized feces
Decomposer An organism that breaks down the tissue and/ or structures of dead organisms
Erosion Weathering or wearing away of rock and earth (and any fossils they contain) caused by wind, sun, and/ or water
Fossil The natural remains of traces of past life. Something is considered to be a fossil if it is at least 10,000 years old
Fossil Record ALL of the fossils that have existed throughout life's history, whether they have been found or not
Groundwater Water found underground as a result of rainfall, ice, and snow melt, submerged rivers, lakes and springs
Ichnology The study of trace fossils
Igneous Rock Type of rock produced when molten magma (lava) cools and solidifies
Inorganic Not containing carbon. Not from living things. Ex., mineral
Impression Fossilized prints or marks made by a living thing. Leaf prints, skin prints, and footprints
Intertidal The coastal zone between the low and high tide mark where waves impact the land
Metamorphic Rock Rock produced when any type of rock is changed by heat, pressure,and chemical activity in the earth
Mineralization The process whereby living material is replaced with minerals
Uncomformity The surface where new rock layers is not always complete
Inclusion Piece of rock that is contained in another rock
Index Fossil Fossils used to define and identify geologic periods
Relative Age The age compared to the age of other rocks
Absolute Age Number of years since the rock formed
Law of Superposition To determine the relative ages of sedimentary rock layers
Extrusion Lava that hardens on surface
Intrusion Magma that cools and hardens into a mass of igneous rock
Fault A break in earths crust
Sedimentary Rock Rock made from sediments that have been deposited and pressed together to form solid rock
Mold The impression of an organism left behind in the rock
Paleontology The study of life in the past
Paleontologists People who study fossils and other types of evidence to learn about life in the past
Plate Tectonics The concept that explains the movement of the earths crustal plates, sea floor, spreading, and a number of other geologic processes of the earths surface
Rock Cycle The process which through one type of rock (igneous, sedimentary, or metamorphic) is converted into another
Scavenger An organism that feeds on dead and dying organisms
Trace Fossil Evidence left by organisms such as burrows,imprints, coprolites, or footprints
Created by: thellamallord
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