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Fossil Vocabulary
| Question | Answer |
|---|---|
| fossil | preserved remains or traces of plants or animals that lived long ago |
| mold fossil | a hollow space in a rock that has the shape of the living thing |
| cast fossil | a model in the shape of the living thing found in a rock |
| amber fossil | sticky tree sap that trapped and preserved animals or plants |
| trace fossil | evidence found in rocks that show an animal was there |
| index fossil | fossils used to help identify periods in earth’s history |
| living fossil | an animal or plant living today that has not changed very much from its species of long ago |
| mass extinction | a time in Earth’s history when a major event caused many species to become extinct all at the same time |
| relative age | comparing a layer of rock to other layers to decide if it is older, younger, or about the same age |
| trilobite | a fossil of a sea animal with a three section exoskeleton |
| Pangaea | the theory that states the 7 continents were once connected as one giant continent |
| sedimentary rock | one kind of rock that forms when sediment settles to the bottom of water and is pressed and cemented tightly together to form a rock layer |
| Grand Canyon | a landform which shows rock layers that formed at different times in Earth’s history and in different environments |
| Paleontologist | a scientist who studies fossils |
| geological time scale | scientist measure Earth’s history from when the crust formed billions of years ago until now |
Created by:
stignatiusgrade4
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