INSIDE THE EARTH

1234567891011121314
Across
  1. 2. HALF A BILLION YEARS OR MORE
  2. 4. INDICATES THE EARTH IS ABOUT 4.570 BILLION YEARS
  3. 5. THE THICKEST LAYER
  4. 6. ANOTHER WORD FOR UPPER MANTLE
  5. 8. _________ IS THE LARGEST TIME UNIT
  6. 9. _________ IS THE SECOND LAYER OF ROCK
  7. 10. LAYER CONTAINING THE CRUST AND UPPER MOST MANTLE
  8. 11. MYA
  9. 12. THE OCEANIC CRUST IS COMPOSED OF __________
  10. 14. PERSON WHO STUDIES THE STRUCTURE OF THE EARTH
Down
  1. 1. COMPOSED OF MORE NICKLE AND IRON
  2. 3. THE BOUNDRY BETWEEN CRETACEOUS PEIOD AND PALEOGENEPERIOD
  3. 7. TENS OF MILLIONS OF YEARS
  4. 11. THE SPINNING OF THE LIQUID IN THE OUTER CORE CAUSES THE EARTHS_______
  5. 13. HARD AND BRITTLE