6th Geologic Time Crossword Review

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Across
  1. 2. A scientific name has ______________ parts.
  2. 4. The change in living things over time is called ______________.
  3. 5. ______________ are the main life forms around during the Cenozoic Era.
  4. 7. Evolution occurs via ______________ changes over a LONG time.
  5. 10. In nature, evolution occurs when nature picks what traits are best adapted to their environment. This is called ______________.
  6. 15. The Law of ______________ explains how deeper rock layers are older than ones closer to the surface.
  7. 18. The ______________ Era is the "current" Era; the one we are in right now.
  8. 19. We use a ______________ system to show which species are related to which other species.
  9. 20. The ______________ Era was the "middle" era; second Era we cover.
Down
  1. 1. We use the ______________ do show how Earth has changed over its history.
  2. 3. Earth is ______________ years old.
  3. 6. The ______________ Era was the "past" era; the oldest one.
  4. 8. The main life form during the Precambrian Time was ______________.
  5. 9. There are ______________ kingdoms that all life is split into.
  6. 11. There are ______________ ERAS on the GTS.
  7. 12. The Theory of Evolution by Natural Selection was originally proposed by ______________.
  8. 13. ______________ were the main life forms during the Paleozoic Era.
  9. 14. There are ______________ major time periods on the GTS.
  10. 16. ______________ Time is the oldest time period on the GTS.
  11. 17. ______________ were the main life forms around during the Mesozoic Era.