Unit 4 - Into Space

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Across
  1. 5. to let someone do something
  2. 6. a special trip that has an aim or a goal
  3. 8. very effective and useful
  4. 10. the things and conditions around a person, animal, or plant
  5. 11. to meet or communicate with someone
  6. 14. the amount of space between two things
  7. 16. a fact or situation that is worrying
  8. 19. the treatment and study of illnesses and injuries
  9. 20. all of something
Down
  1. 1. the things that are shared and accepted by people in a society
  2. 2. a piece of equipment used to do something
  3. 3. a person, country, or thing located nearby
  4. 4. able to live on one’s own
  5. 7. the outer part of something
  6. 9. to go around
  7. 12. an improvement
  8. 13. to help
  9. 15. to recognize or discover something
  10. 17. to be present
  11. 18. to look for something