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Fossil Fun
Have fun learning about fossils!
13
Biology
9th Grade
04/25/2008

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Term
Fossil
Definition
Any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.
Term
Sedimentary Rocks
Definition
 
A rock formed from consolidated clay sediments.
Term
Petrified Fossil
Definition
To convert into stone or a stony substance.
Term
Mold
Definition
A frame on which fossil is formed or made.
Term
Relative Dating
Definition
In archaeology, the arrangement of artifacts or events in a sequence relative to one another but without ties calendrically measured time; the arrangement of artifacts in a typological sequence or seriation.
Term

Absolute Dating

Definition
The determination of the age of an object with reference to a specific time scale, such as a fixed calendar or in years before present (BP), based on measurable physical or chemical qualities or associations with written records; also called Chronometric Dating.
Term
Radioactive Element
Definition

An unstable element that can be used to date fossils by using

half-lifes.

Term

Half-life

Definition
The time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
Term
Fossil Record
Definition
A term used by paleontologists to refer to the total number of fossils that have been discovered, as well as to the information derived from them.
Term

Extinct

Definition
No longer in existence; that has ended or died out.
Term
Gradualism
Definition
The principle or policy of achieving some goal by gradual steps rather than by drastic change.
Term
Punctuated
Definition
To interrupt at intervals.
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