Term
| What must happen in order for something to become a fossil? |
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Definition
1. Material must to rott away
2. must wait until molecules of remains diffuse into stone
3. then it can finally become a fossil |
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Term
| Define Igneous and Sedimentary rock |
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Definition
1. Igneous- rocks that harden out of lava
2. Sedimentary- rocks that form from stuff that settles. Typically mud or sand(sandstone)(limestone-> also where we find most fossils) |
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Term
| How does Diffusion make dead organic material turn into fossils? |
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Definition
| 1. Diffusion takes place, and molecules from dead organic organisms diffuses from a higher concentration to a lower concentration. Takes a very long time and happens very slow.(called being "petrified") |
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Term
| What is the definition of "fossil" and what substance commonly holds fossils? |
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Definition
1. Fossils-any perserved remains of dead organisms.
2. Amber-hardened tree sap
3. tar, bogs->asidic and perserve well because of lack of 0xygen |
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Term
What are the three limitations of fossil evidence?
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Definition
1. very few things fossilize
2. many fossils are destroyed
3. few are findable |
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