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Obj 2.3
Vocabualry Words
11
Science
6th Grade
12/02/2008

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Cards

Term
Superposition
Definition
the principle that states younger rock is over older rock
Term
Paleontology
Definition
the study of long dead organisms or fossils
Term
Strata
Definition
Layers in rock
Term
Fault
Definition
a break in the earth's crust
Term
Folding
Definition
the bending of rock layers due to stress in the earth’s crust.
Term
Tilting
Definition
when internal forces in the Earth slant rock layers without folding them.
Term
relative dating
Definition
Determining the age of an object or event.
Term
geologic column
Definition
The arrangement of rock layers in which the oldest rocks are at the bottom and the youngest at the top
Term
stratification
Definition
The layering
Term
unconformity
Definition
is a missing rock layer that creates gaps in the rock sequence.
Term
instrusion
Definition
the movement of magma through the cracks of underground rock.
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