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11 Cards in this Set
- Front
- Back
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Uniformitarianism |
States that geologic processes that happened in the past can be explained by current geologic processes. |
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Fossils |
The trace remains of an organism that lived long ago. |
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How do organisms become preserved as fossils? (5 ways) |
1. Trapped in amber 2. Trapped in asphalt 3. Buried in Rock 4. Become frozen 5. Become petrified |
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Trace Fossils |
fossilized structure that formed in sedimentary rock by animal activity on or in soft sediment. |
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Two examples of Trace fossils:
(Pg. 153) |
1. Tracks 2. Burrows |
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What can fossils tell us? |
1. Environmental Changes over time (ex. finding fish fossils represents what?) 2. How life forms have changed over time |
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How does Sedimentary rock show Earth's history? |
1. Composition - Shows the source of the sediment that makes up the rock
2. Texture and Features - Shows the environment in which the sediment was carried and deposited. |
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Pangea |
Single landmass once formed by all the continents |
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Climate |
Describes the weather conditions in the area over a long period of time. |
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What mostly determines climate? |
Temperature and Precipitation |
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Ice Core |
Long cylinder of ice drilled out of icecaps that give the history of Earth's climate over time. |
