Vocabulary Practise- Crossword puzzle

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Across
  1. 2. large sticks used for underarm support after an accident/ injury
  2. 6. to suddenly give way or fall down
  3. 9. Scientists do this
  4. 10. something not real is......
  5. 13. geophysical features of the Earth such as mountains, rivers, forests, etc.
  6. 14. a bodily mark from an accident
  7. 15. a competition among athletes
  8. 16. to fly high
  9. 18. evidence or arguments for establishing truth
Down
  1. 1. respiratory organs in the human body
  2. 3. to make someone feel stronger or more confident when doing something
  3. 4. the process of being mentally stimulated to do something
  4. 5. a disease that affect the cells in the human body
  5. 7. conditions of weakness and inability
  6. 8. to get over a challenge
  7. 10. to cut off a limb by surgery
  8. 11. a piece of hard white tissue in the human body
  9. 12. apply pressure that causes damage or breakage
  10. 15. when a secret is made known it 's called a...
  11. 17. a physical activity involving physical exertion