Time machine Crossword

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Across
  1. 1. The hidden world under the ground.
  2. 3. Opposite of light; when there is no sun or brightness.
  3. 4. A big, beautiful building, often for kings or queens.
  4. 8. A long trip from one place to another.
  5. 9. A great cultural and social development of a group of people.
  6. 10. The sun going down, when day turns into night.
  7. 11. Land covered with many trees.
  8. 13. A person who travels through time.
  9. 15. People who live underground in the future; strong and frightening.
  10. 16. The people who live on the surface in the future; small, gentle, childlike.
  11. 17. The fourth measure beyond length, width, and height (time).
  12. 19. Brightness that makes things visible.
  13. 22. Bright burning flame used for light and heat.
  14. 23. The time that has already happened.
  15. 24. Shining points in the night sky, far away in space.
  16. 26. The time that has not happened yet.
  17. 27. A sense of trust and positive expectation for the future.
  18. 28. Something created by humans, usually new and useful.
Down
  1. 2. The line between two places or the space between them.
  2. 5. The place where scientists do their experiments.
  3. 6. A new idea or fact that someone finds out.
  4. 7. A situation where harm is possible.
  5. 10. To be without risk, in protection.
  6. 12. A person who studies and experiments with science.
  7. 14. A large moving watercourse in nature.
  8. 18. A scientific test or trial to prove an idea.
  9. 20. Machine A machine created to move through time.
  10. 21. The current moment, what is happening now.
  11. 22. The feeling when you are afraid.
  12. 25. The bright object that shines at night, smaller than the sun.