Unit 3 The world of science

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Across
  1. 4. the person in charge of a ship
  2. 6. burst out violently like volcanoes
  3. 7. how far down something goes
  4. 9. public show of artworks
  5. 16. deeply attracted by something
  6. 17. step by step over time
  7. 18. painting or photo of a person’s face
  8. 19. use up energy or materials
  9. 20. happening at the very beginning
Down
  1. 1. tell the difference between things
  2. 2. people living in a certain area
  3. 3. not realize or know something
  4. 5. show how to operate or do something
  5. 8. hollow pipe carrying liquid or gas
  6. 10. extremely beautiful and impressive
  7. 11. line separating two countries
  8. 12. gas humans need to breathe
  9. 13. a fight between groups or armies
  10. 14. surprise people greatly
  11. 15. wide from one side to another