The Rock and Fossil Record
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The same geologic processes have been at work throughout Earth's history. | The principle of uniformitarianism
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| THe principle that states that geologice change is sudden | Catastrophism
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| The study of past life using fossils. | Paleontology
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| Sciencetist who study past life using fossils. | Paleontologists
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| Remains of organisms preserved by geologic processes | Fossils
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| The study of the history of the Earth | Geology
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| Most fossils are preserved in | Sedimentary Rock
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| A missing layer of rock in a sequencing parallel rock layer | Disconformity
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| The idea that younger rocks lie on top of older rocks. | Superposition
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| A break in the geologic record. | Uncomformity
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| The process of figuring out if an object is older or younger than another. | Relative Dating
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| The process of wearing down. | Erosion
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| A missing layer that exitsts between horizontal and folded rock layers. | Angular Unconformity
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| A break in the Earth's crust. | Fault
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| Process in which minerals replace tissues. | Mineral Replacement
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| Unstable isotopes | Radioactive
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| The process of figuring out how old an object is | Absolute dating
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| The most common method of absolute dating | Radiometric Dating
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| The time it takes for one-half of a radioactive sample to decay | Half-life
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| The process in which radioactive isotopes break down into stable isotopes | Radioactive Decay
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| Mark or Cavity | Mold
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| Fossil from a specific time period | Index Fossil
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| Fossil formed by an animal's movement | Trace Fossil
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| mold filled with sediment | Cast
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| What is hardened tree sap? | Amber
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| Largest division of geologic time. | Eon
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| Unit of geologic time that includes two or more periods | Era
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| Third largest division of geologic time | Period
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| Fourth largest division of geologic time | Epoch
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| Death of a species | Extinction
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| Standard method that divides Earth's history into parts | Geologic Time Scale
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| A mark left by a dinosaur's tail would be considered a | Trace Fossil
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| How many years of Earth's history do geologists study? | 4.6 Billion Years
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| To reconstruct Earth's climate history, Scientists drill out? | Ice Cores
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Created by:
stameykl
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