unit 4.1&4.2 Word Scramble
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| Term | Definition |
| uniformitarianism | a priciables that geologic processes that occured in the past can be explained by current geologic processes |
| fossil | the trace or remains of an organism that lived long time ago, most commonly preserved in sedimentary rock |
| trace fossil | a fossilized structure, such as a footprint or coprolite that formed in sedimentary rock by an anmial on or within soft |
| climate | the weather condidtions in an area over a long period of time |
| ice core | a long cylinder of ice obtained from drilling through ice caps por ice sheets: used to study past climate |
| bands | layers in ice cores |
| relitive dating | any method or detemining wheather an event or object is older tor younger that other object |
| superposition | a princible that states that younger rcoks lieabove older rocks if layers have not been disterbed |
| unconformity | a break in the geologic record created when rock layers are eroded o when sediment is not deposeted for e period of time |
| geologic column | an ordered arrangment of rock layers that is based on the relative ages of the rocks adn which the oldest rocks are at the bottom |
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