Earth 1

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Across
  1. 1. Plates slide past one another
  2. 4. The actual age of a geologic material/event
  3. 5. The process of objectively establishing facts through testing and experimentation.
  4. 7. The place in of an event in a time sequence without regard to the absolute age in years.
  5. 10. The geologic field that deals with all aspects of Earth’s structure, composition, physical properties, constituent rocks/minerals, and surficial features
  6. 11. Plates are created and spread apart
  7. 12. A hypothesis that has survived repeated challenges and is supported by accumulating favorable evidence
  8. 15. The theory that the Earth’s crust is several moving plates that are formed by volcanic activity at the oceanic ridges and destroyed along great ocean trenches.
  9. 17. The field that uses geologic principles and methods to reconstruct the geological History of Earth
Down
  1. 2. The zone between 50 & 250 kilometers below the Earths Surface
  2. 3. A testable and falsifiable guess based of data/facts
  3. 5. A theory that have been repeatedly tested and proven, and can be expressed mathematically
  4. 6. The outer layer of the Earth comprising of the crust and upper mantle
  5. 8. Plates are Destroyed
  6. 9. The second layer of the density/chemical layers of the earth
  7. 13. The outer layer of the lithosphere averaging a thickness of 32 kilometers
  8. 14. The time in which a radioactive “parent” decays half of its radioactive atoms into a daughter product
  9. 16. Process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genetic constitution