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Chapter 15 Review

Test Review for Rock and Fossil Record

QuestionAnswer
What are ice cores used to study? Earth's climate history
Most fossils are preserved in this type of rock. sedimentary
The wearing down by wind and water erosion
Age of the Earth 4.6 Billion years
The principle that states that younger rocks lie over older rocks Principle of Superposition
What type of fossil is a footprint? trace fossil
Fossils used to date surrounding rock layers index fossil
largest division of earth's history eon
comparing rock layers in a sequence to determine age relative dating
a type of fossil that leaves a cavity (hole) mold
Era with the largest mass extinction Paleozoic
Era in which we now live Cenozoic
Age of Reptiles Mesozoic
Era of Firsts Paleozoic
Era in which birds and small mammals appeared Mesozoic
hardened tree sap amber
The cause for the extinction of the dinosaurs climate change
The proccess in which radioactive isotopes break down into stable isotopes radioactive decay
Study of the Earth geology
study of past life paleontology
time it takes for half of a radioactive sample to decay halflife
death of a species extinction
process of measuring the age of an object in years absolute dating
unstable atoms radioactive atoms
process in which minerals replace an organism's tissue petrifaction
Era known as "Age of Mammals" Cenozoic
Era known as "Old Life" Paleozoic
Missing layers of rock unconformity
principle that states that geologic changes occur suddenly catastrophism
Idea that geologic process occurring now are the same as those in the past uniformitarianism
figuring out if an object is older or younger than another relative dating
molten rock that squeezes into other rock intrusion
a break in the earth's crust fault
bending of rock layers folding
slanting of rock layers tilting
He wrote the principle of uniformitarianism - Theory of the Earth James Hutton
He wrote Principles of Geology and convinced others to believe uniformitarianism Charles Lyell
an ideal sequence of rock layers that contains all known fossils and rock formations on Earth geologic column
parent isotope radioactive isotope
daughter isotope stable isotope
determining the age of an object by estimating the percentages of daughter and parent material radiometric dating
radioactive isotope found in all living things Carbon-14
The actual remains of a once living organism original remains
fossil that forms when a mold is filled with sediment or minerals cast
the remains of a once living organism fossil
What type of fossil is dinosaur poop? trace fossil
Created by: anita.parker
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