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Fossils
Unit C Chapter 3
Term | Definition |
---|---|
trace fossil | A clue to the activity of an animal that lived long ago. |
fossil | A clue, preserved in rock, about life in the distant past. |
mold | A fossil imprint left by a plant or animal. |
cast | What forms when minerals fill a mold fossil and then harden. |
sedimentary rock | The most likely place to find a fossil. |
petrified | When woody material in a tree is replaced with mineral, the tree becomes ____________________. |
infer | When you use what you already know to explain your observations. |
amber | Sap hardened to form a clear, yellow material. |
rock layers | Formed by sediments over time. |
carbon film | Only a thin film, or sheet, of black carbon is left of this type of fossil. |
bones | The _______ of an animal would be the most likely part to form a fossil. |
petrified fossil | A tree buried in a mineral hot spring would probably form a ______. |
droppings | By studying fossils of an animal’s ______, scientists can find out what the animal might have eaten. |
footprint | A ______ is an example of a trace fossil. |