Unit 4 Vocabulary

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Across
  1. 1. to discuss a topic in which two or more groups disagree and agree on
  2. 3. information, facts
  3. 5. system the sun and planets that move around it
  4. 6. all things such as planets, stars, galaxies etc. that exist in space
  5. 7. a vehicle that is used for travel in space
  6. 11. a vehicle that can travel very fast
  7. 12. the act of traveling around to discover a thing or place
  8. 15. a person who has trained to travel in space
  9. 16. a long trip
  10. 17. an electrical wave sent through the air
  11. 18. the universe, outside the Earth
  12. 19. an object in space that travels around the sun, it leaves a bright long line in its path
Down
  1. 2. a creature that may exist outside the Earth
  2. 4. station a vehicle that provides houses for astronauts and used for doing scientific tests
  3. 8. the gasses surrounding the Earth
  4. 9. a large group of stars
  5. 10. to talk about something with others
  6. 13. a large object in space that moves around the sun
  7. 14. to follow the curved path around something such as the sun
  8. 17. to look carefully to find out something