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Earth's History

TermDefinition
Abiotic/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 Fossils Body parts of organism that become fossils, such as bones, teeth, skin, leaves, tree trunks
Cast Casts are formed when the sediment leaks into a mold and hardens to form a copy of the original structure.
Compression Fossils formed when an organism is flattened, 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.
Fossil Record ALL of the fossils that have existed throughout life's history, whether they have been found or not.
Fossil The natural remains or traces of past life.
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 The type of rock produced when molten magma cools and solidifies
Inorganic Not containing carbon. Not from living things
Impression Fossilized prints or marks made by a living thing
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.
Mineralized The process whereby living material is replaced with minerals
Mold The impression of an organism left behind in the rock
Paleontology The study of life in past history
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 Earth's crustal plates, sea floor, spreading, and a number of others geological processes of the Earth's sufaces
Rock cycle the process through which one type of rock is converted to another
Scavenger An organism that feeds on dead and dying oranisms
Sedimentary Rock Rock that is formed when layers of small particles are compressed
Trace fossil evidence left by organism such as burrows, imprints, coprolites, or footprints
Uplift the process that causes part of the Earth's crust to rise above surrounding areas. This can cause layers of rock to become at the surface
Relative age age compared to the age of other rocks
Absolute age the number of years since the rock formed
Law of superposition Law used to determine the relative ages of sedimentary rocks
Extrusion Lava that hardens of surface
Intrusion when magma cools and hardens into mass of Igneous rock
Fault break in Earth's Crust
Unconformity new rock layers meet
Inclusion Piece of rock that is continued in another rock
Index fossil certain fossils
Atoms tiny particles
element any substance that cannot be broken down
radioactive decay process in which releases particles
halflife time it takes for half of the atoms to decay
Created by: brauliocc5