Vocab 10 Fossils

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Across
  1. 3. _________fossil - a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found
  2. 4. The preserved remains or traces of an organism that lived in the past
  3. 7. A type of fossil that forms when a mold becomes filled in with minerals that then harden
  4. 9. The process by which minerals replace parts of an organism.
Down
  1. 1. A scientist who studies fossils
  2. 2. the process by which organic matter exposed to minerals over a long period is turned into a stony substance.
  3. 5. _________dating - a scientific method used to determine the age of an artifact
  4. 6. _________dating - Method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock
  5. 8. _________fossil - a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
  6. 10. The impression of an organism in a rock