Flashcards
Fossils flashcards
Cards in this deck (14)
- 1Fossilspreserved traces or remains of living things
- 2What is the first step of fossil formation?when living things die and are buried by sediments
- 3What is the second step of fossil formation?soft part decays & hard part stays
- 4What is the third step of fossil formation?sediment slowly hardens into rock & preserves shape of organism
- 5What kind of rock are fossils found in? Why?Sedimentary because
1) the layers pile up
2) it wouldn't be in igneous/metamorphic rock because that requires heat or pressure - 6Petrified fossils/perimineralized fossilsspaces inside organism are filled w/ minerals from groundwater
- 7Mold fossilformed when hard part decays and leaves a hollow cavity in shape of organism
- 8Cast fossilformed when minerals or sediment fill in space in shape of organism
- 9Carbonaceous film fossilthin layer of carbon on the rock; left when gases/liquids given off by body form an image
- 10trace fossilsprovides evidence of activity (animal size, speed, behavior)
- 11original remainsactual remains of organism
- 12Original remains occur if trapped in ______, ________, or ______.amber, ice, or tar
- 13index fossilorganisms that existed for a short period of time, lots of fossils from that time period
- 14Some examples of index fossils with behavior are .....Herd protecting the young
Predator stalking and attacking
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- Description
- These are fossils flashcards for our quiz on Tuesday.
- Created by
- Lindsay McBride
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