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fossil record

QuestionAnswer
physical factors non living factors such as erosion wind and sun exposure
biological factors living factors such as decomposers scavengers and predators
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 structure
coprolite fossilized feces
decomposer an organism that breaks down the tissue and/or structures of dead organism
erosion weathering or wearing away of rock and and earth caused by wind sun and or water
fossil the natural remains
fossil record ALL of the fossils that have existed throughout lifes history whether they have been found or not
groundwater water found underwater as a result of rainfall and the natrual causes
Ichnology the study of trace fossil
Igneous rock type of rock produced when molten magma cools and solidifes
Inorganic not contataining carbon. Not from living things
impression fossilized prints or marks made by a living thing. Leaf prints, skins prints and footprints are good examples
intertidal the coastal zone between the low and high tide mark where waves impact the land
metamorphic rock rock produces when any type of rocl is changed by heat pressure and chemical activity in the earth
mineralization the process wherby living material is replaced with minerals
benthic living at the bottom of ocean or on the ocean floor
mold the impression of an organism left behind in the rock
paleontology the study of life in the past
paleontologist are people who study fossils and other type of evidence to learn about life in the past
plate tectonics the concept that explains the movement of the Earth's crustal plates sea floor
rock cycle the process through which one type of rock is converted into together
scavenger an organism that feeds on dead and dying organism
sedimentary rock rock that is formed when layers of small particles are compressed and cemented together
trace fossils evidence left caused by organisms such as burrows imprints coprolites or footprints
uplift the process that causes part of the Earth's crust to to rise above surrounding areas.This can cause layers of rock to become exposed at the surface
body fossils body parts of organism that become fossils such as bones teeth skins leaves tree trunks
relative age the age of a rock composed to the ages of other rocks
absolute age the number of years since rock since formed
law of superposition layers of rock gets older as you go down
extrusion lava that hardens on the surface
intrusion the magma cools and hardens into a mass of igneous rock
fault a break in the earth's crust
unconformity the surface where new rock meets old rock
index fossil a fossil must be widely distributed and represent a type of organism
sedimentary rock from sediments that have been deposited and are pressed together
atoms Tiny particles
elements One class of substance that cannot be separated into simpler substance by chemical means
half-life The process by which the nucleus often usable atom loses enery
radioactive decay The time required for one half the atoms of a given amount of radioactive substance to disintegrate
Created by: superkittymel
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