Vocabulary

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Across
  1. 2. cost; happen; succeed
  2. 4. learner
  3. 6. loud; extremely noisy
  4. 7. reach; achieve; accomplish
  5. 9. to defy; a contest; competition
  6. 11. important; significant; impressive
  7. 13. mountain; opening in Earth’s crust
  8. 17. idea; rule; scientific concept
  9. 18. not sure; unclear
Down
  1. 1. teacher; supporter
  2. 3. jeopardy; risky
  3. 5. scientist
  4. 6. appreciation; identification; ID; detection
  5. 8. to enlist; to enroll; to invite
  6. 10. knowing or realizing something
  7. 12. astonishing; very good
  8. 14. something resulting from the past; relic
  9. 15. mechanical person
  10. 16. to disobey; to rebel
  11. 17. powerful person