Earth's History - Gracie

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Across
  1. 2. The earliest and longest era in Earth's history.
  2. 6. The geological time scale is split into four of these.
  3. 7. All of Earth's history in chronological order on a time scale.
  4. 8. Remains of past organisms.
  5. 10. A type of geology where you study the strata in Earth.
  6. 11. A scientist who studies fossils.
  7. 12. The current era in Earth's history.
Down
  1. 1. There were a lot of these very cold weather events in the early Cenozoic Era.
  2. 3. Not the exact age of something, but a general age.
  3. 4. A scientist who studies the crust of Earth and how the crust was made.
  4. 5. The second era in Earth's history. Life starts to get more complex.
  5. 9. The third era in Earth's history. Known as "The Era of the Dinosaurs."