U4 vocabulary revision

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Across
  1. 1. to go down
  2. 3. to stop something before it happens
  3. 6. a bright flash of light in the sky during a storm
  4. 9. to make something happen
  5. 13. to fall suddenly
  6. 14. the amount of rain that falls
  7. 15. to become less
  8. 19. power used for work, light, or heat
  9. 21. to find something new
  10. 22. to become more
Down
  1. 2. feeling mad
  2. 4. a loud noise after lightning
  3. 5. a strong surprise
  4. 7. animals living in nature
  5. 8. warming the Earth getting warmer
  6. 10. feeling unhappy or worried
  7. 11. in a safe and slow way
  8. 12. to go up
  9. 16. to get to a level or place
  10. 17. having little or no water
  11. 18. to make a choice
  12. 20. to go away or not be seen