Geologic Time: Question Preview (ID: 23007)

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A principle that states that geologic processes that occurred in the past can still be explained by the current geologic processes
a) uniformitarianism b) catostrophism c) relative dating d) absolute dating
A trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
a) absolute dating b) fossil c) index fossil d) superposition
Any method of measuring the actual age of an event or object in years
a) relative dating b) radiometric dating c) absolute dating d)
Any method of determining whether an event or object is older or younger than other events or objects
a) absolute dating b) relative dating c) radiometric dating d)
A break in the geologic record created when rock layers are eroded or when sediment is not deposited for a long period of time
a) unconformity b) superposition c) relative dating d) fossil
A fossil that is found in the rock layers of only one geologic age and is used to establish the age of rock layers
a) trace fossil b) fossil c) index fossil d)
A principle that states that younger rocks lie above older rocks if the layers have not been disturbed
a) relating dating b) superposition c) geologic column d) unconformity
the scientific study of fossils
a) paleontology b) geology c) chemisty d) physics
The death of every member of a species
a) superposition b) uniformitarianism c) extinction d)
An arrangement of rock layers in which the oldest rocks are at the bottom
a) superposition b) geologic column c) unconformity d) rock column
a fossilized mark that is formed in soft sediment by the movement of an animal
a) trace fossil b) index fossil c) fossil d) unconformity
In a geologic column, where is the oldest rocks and fossils found?
a) top b) middle c) bottom d)
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