gelogic time scale.

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Across
  1. 2. early life.
  2. 4. age-how scientists determine the age of a rock.
  3. 5. of dinosaurs.
  4. 7. earth had calmed and stabillized.
  5. 9. the sequence is undisterbed the younger layer will be on top and the older will be underneath.
  6. 10. rock fragments that are included in a rock must be older than the rock in which they are included.
Down
  1. 1. age-the age of a rock.
  2. 3. system still forming.
  3. 6. 6.5 million years ago to present day.
  4. 8. the sequence o defying how old a rock is by cuttng through it if you can cut through it its younger and if you cant its older.