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Module 7 Vocabulary
The Fossil Record
Question | Answer |
---|---|
Catastrophism | The view (or belief) that most of the earth's geological features formed through catastrophes. |
Catastrophe | A sudden, violent change in nature such as a major flood or volcanic eruption. |
Uniformitarianism | The view (or belief) that most of earth's geological features formed over Millions of years, slowly and gradually. |
Unconformity | A surface of erosion that seperates one layer of rock from another. |
Petrifaction | The conversion of organic material into stone. |
Resin | A sticky, liquid substance that usually hardens when exposed to air. |
Fossil Record | Sum total of all fossils on the earth. |
Extinct | A term that refers to a plant or animal that was once living but now is not. |
Placoderms | Fish that had bony plates covering their heads instead of scales. Assumed to be extinct. |
Amphibians | Creatures that live both in and out of water. |