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Sedimentary rock rock made of loose pieces of other rocks crushed together.
Original remains actuall body parts of organisims
casts and molds fossils made in sedimentary rocks
petrified wood Stone fossil of a tree
fossil Remains of living things from long ago
ice core a tublar sample that shows layers of snow and ice
relative age the age of an object or event in relatijon to other objects
carbon films a film that is left on a rock and shows soft parts of an animal
trace fossils not animal parts, rather evidence that an animal was there (foot print)
Tree rings something that shows the age of trees
index fossils fossils that existed for specific spans of time
absolute age the exact age of a object or event
half life the measurement of radioactive elements age
geologic time scale divides earths history into intervals of time
Created by: barton1b37