Vocabulary Crossword

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Across
  1. 3. a massive irregularly shaped slab of solid rock
  2. 4. to make something simpler
  3. 8. a part of a whole
  4. 12. two plates coming closer together
  5. 14. a sideways and downward moving plate
  6. 16. the quantitative relation between two amounts
  7. 17. a theory explaning the structureof the Earths crust
  8. 18. it is under the crust and it is mostly solid
Down
  1. 1. a line the marks the end of an areas
  2. 2. two plates moving away from each other
  3. 5. the numbers on the right side of the number line
  4. 6. the tough center part of the Earth
  5. 7. to find the answer to something
  6. 9. the remains of a prehistoric organism preserved as mold
  7. 10. the numbers on the left side of the number line
  8. 11. a number based on tenths,hundredth and thousandths
  9. 12. the tough outer part of something
  10. 13. a long narrow ditch
  11. 15. a super continent that was like the land mass on Earth